diff --git a/mods/ENTITIES/mcl_mobs/api.lua b/mods/ENTITIES/mcl_mobs/api.lua
index 94d6340ea3..d856334214 100644
--- a/mods/ENTITIES/mcl_mobs/api.lua
+++ b/mods/ENTITIES/mcl_mobs/api.lua
@@ -3562,7 +3562,7 @@ local mob_step = function(self, dtime)
 	end
 
 	-- mob plays random sound at times
-	if random(1, 100) == 1 then
+	if random(1, 70) == 1 then
 		mob_sound(self, "random", true)
 	end
 
@@ -3925,7 +3925,35 @@ end
 end -- END mobs:register_mob function
 
 
+
+
+
+
+
+
+
+
+
+
+
+--BEGIN SPAWNING ALGORITHM
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
 -- count how many mobs of one type are inside an area
+--[[
 local count_mobs = function(pos, mobtype)
 
 	local num = 0
@@ -3969,7 +3997,7 @@ local count_mobs = function(pos, mobtype)
 
 	return num
 end
-
+]]--
 
 -- global functions
 
@@ -3979,9 +4007,49 @@ function mobs:spawn_abm_check(pos, node, name)
 end
 
 
-function mobs:spawn_specific(name, nodes, neighbors, min_light, max_light,
-	interval, chance, aoc, min_height, max_height, day_toggle, on_spawn)
+--[[
+	Custom elements changed:
+name:
+the mobs name
 
+dimension: 
+"overworld"
+"nether"
+"end"
+
+types of spawning:
+"air"
+"water"
+"ground"
+"lava"
+
+what is aoc???
+
+WARNING: BIOME INTEGRATION NEEDED -> How to get biome through lua??
+]]--
+
+--this is where all of the spawning information is kept
+local spawn_dictionary = {
+	["overworld"] = {},
+	["nether"] = {},
+	["end"] = {}
+}
+
+function mobs:spawn_specific(
+	name,
+	dimension,
+	type_of_spawning, 
+	min_light, 
+	max_light, 
+	interval, 
+	chance, 
+	aoc, 
+	min_height, 
+	max_height, 
+	day_toggle, 
+	on_spawn)
+
+	
 	-- Do mobs spawn at all?
 	if not mobs_spawn then
 		return
@@ -4002,7 +4070,6 @@ function mobs:spawn_specific(name, nodes, neighbors, min_light, max_light,
 
 		minetest.log("action",
 			string.format("[mobs] Chance setting for %s changed to %s (total: %s)", name, chance, aoc))
-
 	end
 
 	local spawn_action
@@ -4167,6 +4234,24 @@ function mobs:spawn_specific(name, nodes, neighbors, min_light, max_light,
 		spawn_action(pos, node, active_object_count, active_object_count_wider, name)
 	end
 
+
+	--load information into the spawn dictionary
+	local key = #spawn_dictionary[dimension] + 1
+
+	spawn_dictionary[dimension][key] = {}
+	spawn_dictionary[dimension][key]["name"]       = name
+	spawn_dictionary[dimension][key]["type"]       = type_of_spawning
+	spawn_dictionary[dimension][key]["min_light"]  = min_light
+	spawn_dictionary[dimension][key]["max_light"]  = max_light
+	spawn_dictionary[dimension][key]["interval"]   = interval
+	spawn_dictionary[dimension][key]["chance"]     = chance
+	spawn_dictionary[dimension][key]["aoc"]        = aoc
+	spawn_dictionary[dimension][key]["min_height"] = min_height
+	spawn_dictionary[dimension][key]["max_height"] = max_height
+	spawn_dictionary[dimension][key]["day_toggle"] = day_toggle
+	spawn_dictionary[dimension][key]["on_spawn"]   = spawn_abm_action
+	
+	--[[
 	minetest.register_abm({
 		label = name .. " spawning",
 		nodenames = nodes,
@@ -4176,18 +4261,24 @@ function mobs:spawn_specific(name, nodes, neighbors, min_light, max_light,
 		catch_up = false,
 		action = spawn_abm_action,
 	})
+	]]--
 end
 
 
 -- compatibility with older mob registration
+-- we're going to forget about this for now -j4i
+--[[
 function mobs:register_spawn(name, nodes, max_light, min_light, chance, active_object_count, max_height, day_toggle)
 
 	mobs:spawn_specific(name, nodes, {"air"}, min_light, max_light, 30,
 		chance, active_object_count, -31000, max_height, day_toggle)
 end
+]]--
 
 
+--I'm not sure what this does but disabling it doesn't cause a crash -j4i
 -- MarkBu's spawn function
+--[[
 function mobs:spawn(def)
 
 	local name = def.name
@@ -4206,6 +4297,160 @@ function mobs:spawn(def)
 	mobs:spawn_specific(name, nodes, neighbors, min_light, max_light, interval,
 		chance, active_object_count, min_height, max_height, day_toggle, on_spawn)
 end
+]]--
+
+
+local axis
+--inner and outer part of square donut radius
+local inner = 1
+local outer = 70
+local int = {-1,1}
+local position_calculation = function(pos)
+
+	pos = vector.floor(pos)
+
+	--this is used to determine the axis buffer from the player
+	axis = math.random(0,1)
+
+	--cast towards the direction
+	if axis == 0 then --x
+		pos.x = pos.x + math.random(inner,outer)*int[math.random(1,2)]
+		pos.z = pos.z + math.random(-outer,outer)
+	else --z
+		pos.z = pos.z + math.random(inner,outer)*int[math.random(1,2)]
+		pos.x = pos.x + math.random(-outer,outer)
+	end
+	return(pos)
+end
+
+--[[
+local decypher_limits_dictionary = {
+	["overworld"] = {mcl_vars.mg_overworld_min,mcl_vars.mg_overworld_max},
+	["nether"]    = {mcl_vars.mg_nether_min,   mcl_vars.mg_nether_max},
+	["end"]       = {mcl_vars.mg_end_min,      mcl_vars.mg_end_max}
+}
+]]--
+
+local function decypher_limits(posy)
+	--local min_max_table = decypher_limits_dictionary[dimension]
+	--return min_max_table[1],min_max_table[2]
+	posy = math.floor(posy)
+	return posy - 32, posy + 32
+end
+
+
+--todo mob limiting
+--MAIN LOOP
+local timer = 0
+minetest.register_globalstep(function(dtime)
+	timer = timer + dtime
+	if timer >= 15 then
+		timer = 0
+		for _,player in ipairs(minetest.get_connected_players()) do
+			for i = 1,math.random(5) do
+				local player_pos = player:get_pos()
+				local _,dimension = mcl_worlds.y_to_layer(player_pos.y)
+				local min,max = decypher_limits(player_pos.y)
+
+				local goal_pos = position_calculation(player_pos)
+				
+
+				local mob_def = spawn_dictionary[dimension][math.random(1,#spawn_dictionary[dimension])]
+
+				if not mob_def then --to catch a crazy error if it ever happens
+					minetest.log("error", "WARNING!! mob spawning attempted to index a NIL mob!")
+					goto continue
+				end
+
+				if mob_def.type == "ground" then
+
+					local spawning_position_list = minetest.find_nodes_in_area_under_air(vector.new(goal_pos.x,min,goal_pos.z), vector.new(goal_pos.x,max,goal_pos.z), {"group:solid"})
+
+					if #spawning_position_list <= 0 then
+						goto continue
+					end
+					
+					local spawning_position = spawning_position_list[math.random(1,#spawning_position_list)]
+
+					spawning_position.y = spawning_position.y + 1
+
+					local gotten_light = minetest.get_node_light(spawning_position)
+
+					if gotten_light and gotten_light >= mob_def.min_light and gotten_light <= mob_def.max_light then
+						minetest.add_entity(spawning_position, mob_def.name)
+					end
+				elseif mob_def.type == "air" then
+					local spawning_position_list = minetest.find_nodes_in_area(vector.new(goal_pos.x,min,goal_pos.z), vector.new(goal_pos.x,max,goal_pos.z), {"air"})
+
+					if #spawning_position_list <= 0 then
+						goto continue
+					end
+					
+					local spawning_position = spawning_position_list[math.random(1,#spawning_position_list)]
+
+					local gotten_light = minetest.get_node_light(spawning_position)
+
+					if gotten_light and gotten_light >= mob_def.min_light and gotten_light <= mob_def.max_light then
+						minetest.add_entity(spawning_position, mob_def.name)
+					end
+				elseif mob_def.type == "water" then
+					local spawning_position_list = minetest.find_nodes_in_area(vector.new(goal_pos.x,min,goal_pos.z), vector.new(goal_pos.x,max,goal_pos.z), {"group:water"})
+
+					if #spawning_position_list <= 0 then
+						goto continue
+					end
+					
+					local spawning_position = spawning_position_list[math.random(1,#spawning_position_list)]
+
+					local gotten_light = minetest.get_node_light(spawning_position)
+
+					if gotten_light and gotten_light >= mob_def.min_light and gotten_light <= mob_def.max_light then
+						minetest.add_entity(spawning_position, mob_def.name)
+					end
+				--elseif mob_def.type == "lava" then
+					--implement later
+				end
+				--local spawn minetest.find_nodes_in_area_under_air(vector.new(pos.x,pos.y-find_node_height,pos.z), vector.new(pos.x,pos.y+find_node_height,pos.z), {"group:solid"})
+
+
+				::continue:: --this is a safety catch
+			end
+		end
+	end
+end)
+
+
+
+
+
+
+
+
+
+
+
+
+
+--END SPAWNING ALGORITHM
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
 
 
 -- register arrow for shoot attack
diff --git a/mods/ENTITIES/mobs_mc/agent.lua b/mods/ENTITIES/mobs_mc/agent.lua
index 8fa7314cf2..cc9910ee6d 100644
--- a/mods/ENTITIES/mobs_mc/agent.lua
+++ b/mods/ENTITIES/mobs_mc/agent.lua
@@ -1,5 +1,5 @@
 --###################
---################### AGENT
+--################### AGENT - seemingly unused
 --###################
 
 local S = minetest.get_translator("mobs_mc")
diff --git a/mods/ENTITIES/mobs_mc/bat.lua b/mods/ENTITIES/mobs_mc/bat.lua
index 103579b67f..b6825bbbf4 100644
--- a/mods/ENTITIES/mobs_mc/bat.lua
+++ b/mods/ENTITIES/mobs_mc/bat.lua
@@ -64,7 +64,7 @@ else
 end
 
 -- Spawn on solid blocks at or below Sea level and the selected light level
-mobs:spawn_specific("mobs_mc:bat", mobs_mc.spawn.solid, {"air"}, 0, maxlight, 20, 5000, 2, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.water-1)
+mobs:spawn_specific("mobs_mc:bat", "overworld", "air", 0, maxlight, 20, 5000, 2, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.water-1)
 
 
 -- spawn eggs
diff --git a/mods/ENTITIES/mobs_mc/blaze.lua b/mods/ENTITIES/mobs_mc/blaze.lua
index fbffa79200..d56acdf380 100644
--- a/mods/ENTITIES/mobs_mc/blaze.lua
+++ b/mods/ENTITIES/mobs_mc/blaze.lua
@@ -1,6 +1,6 @@
 -- daufinsyd
 -- My work is under the LGPL terms
--- Model and mobs_blaze.png see https://github.com/22i/minecraft-voxel-blender-models
+-- Model and mobs_blaze.png see https://github.com/22i/minecraft-voxel-blender-models -hi 22i ~jordan4ibanez
 -- blaze.lua partial copy of mobs_mc/ghast.lua
 
 local S = minetest.get_translator("mobs_mc")
@@ -128,7 +128,7 @@ mobs:register_mob("mobs_mc:blaze", {
 	end,
 })
 
-mobs:spawn_specific("mobs_mc:blaze", mobs_mc.spawn.nether_fortress, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 5000, 3, mobs_mc.spawn_height.nether_min, mobs_mc.spawn_height.nether_max)
+mobs:spawn_specific("mobs_mc:blaze", "nether", "ground", 0, minetest.LIGHT_MAX+1, 30, 5000, 3, mobs_mc.spawn_height.nether_min, mobs_mc.spawn_height.nether_max)
 
 -- Blaze fireball
 mobs:register_arrow("mobs_mc:blaze_fireball", {
diff --git a/mods/ENTITIES/mobs_mc/chicken.lua b/mods/ENTITIES/mobs_mc/chicken.lua
index 325371e2b2..397b6b8da0 100644
--- a/mods/ENTITIES/mobs_mc/chicken.lua
+++ b/mods/ENTITIES/mobs_mc/chicken.lua
@@ -100,7 +100,7 @@ mobs:register_mob("mobs_mc:chicken", {
 })
 
 --spawn
-mobs:spawn_specific("mobs_mc:chicken", mobs_mc.spawn.grassland, {"air"}, 9, minetest.LIGHT_MAX+1, 30, 17000, 3, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
+mobs:spawn_specific("mobs_mc:chicken", "overworld", "ground", 9, minetest.LIGHT_MAX+1, 30, 17000, 3, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
 
 -- spawn eggs
 mobs:register_egg("mobs_mc:chicken", S("Chicken"), "mobs_mc_spawn_icon_chicken.png", 0)
diff --git a/mods/ENTITIES/mobs_mc/cow+mooshroom.lua b/mods/ENTITIES/mobs_mc/cow+mooshroom.lua
index 005af29807..a094d6d355 100644
--- a/mods/ENTITIES/mobs_mc/cow+mooshroom.lua
+++ b/mods/ENTITIES/mobs_mc/cow+mooshroom.lua
@@ -145,8 +145,9 @@ mobs:register_mob("mobs_mc:mooshroom", mooshroom_def)
 
 
 -- Spawning
-mobs:spawn_specific("mobs_mc:cow", mobs_mc.spawn.grassland, {"air"}, 9, minetest.LIGHT_MAX+1, 30, 17000, 10, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
-mobs:spawn_specific("mobs_mc:mooshroom", mobs_mc.spawn.mushroom_island, {"air"}, 9, minetest.LIGHT_MAX+1, 30, 17000, 5, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
+mobs:spawn_specific("mobs_mc:cow", "overworld", "ground", 9, minetest.LIGHT_MAX+1, 30, 17000, 10, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
+--WARNING: THIS NEEDS A BIOME INTEGRATION
+mobs:spawn_specific("mobs_mc:mooshroom", "overworld", "ground", 9, minetest.LIGHT_MAX+1, 30, 17000, 5, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
 
 -- spawn egg
 mobs:register_egg("mobs_mc:cow", S("Cow"), "mobs_mc_spawn_icon_cow.png", 0)
diff --git a/mods/ENTITIES/mobs_mc/creeper.lua b/mods/ENTITIES/mobs_mc/creeper.lua
index 9ee9e9d248..f283fac187 100644
--- a/mods/ENTITIES/mobs_mc/creeper.lua
+++ b/mods/ENTITIES/mobs_mc/creeper.lua
@@ -39,6 +39,8 @@ mobs:register_mob("mobs_mc:creeper", {
 	runaway_from = { "mobs_mc:ocelot", "mobs_mc:cat" },
 	attack_type = "explode",
 
+	--hssssssssssss
+
 	explosion_strength = 3,
 	explosion_radius = 3.5,
 	explosion_damage_radius = 3.5,
@@ -139,6 +141,9 @@ mobs:register_mob("mobs_mc:creeper_charged", {
 	pathfinding = 1,
 	visual = "mesh",
 	mesh = "mobs_mc_creeper.b3d",
+
+	--BOOM
+	
 	textures = {
 		{"mobs_mc_creeper.png",
 		"mobs_mc_creeper_charge.png"},
@@ -250,7 +255,7 @@ mobs:register_mob("mobs_mc:creeper_charged", {
 	glow = 3,
 })
 
-mobs:spawn_specific("mobs_mc:creeper", mobs_mc.spawn.solid, {"air"}, 0, 7, 20, 16500, 2, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
+mobs:spawn_specific("mobs_mc:creeper", "overworld", "ground", 0, 7, 20, 16500, 2, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
 
 -- spawn eggs
 mobs:register_egg("mobs_mc:creeper", S("Creeper"), "mobs_mc_spawn_icon_creeper.png", 0)
diff --git a/mods/ENTITIES/mobs_mc/enderman.lua b/mods/ENTITIES/mobs_mc/enderman.lua
index f93f131cb8..ca3bc84cea 100644
--- a/mods/ENTITIES/mobs_mc/enderman.lua
+++ b/mods/ENTITIES/mobs_mc/enderman.lua
@@ -562,11 +562,11 @@ mobs:register_mob("mobs_mc:enderman", {
 
 
 -- End spawn
-mobs:spawn_specific("mobs_mc:enderman", mobs_mc.spawn.solid, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 3000, 12, mobs_mc.spawn_height.end_min, mobs_mc.spawn_height.end_max)
+mobs:spawn_specific("mobs_mc:enderman", "end", "ground", 0, minetest.LIGHT_MAX+1, 30, 3000, 12, mobs_mc.spawn_height.end_min, mobs_mc.spawn_height.end_max)
 -- Overworld spawn
-mobs:spawn_specific("mobs_mc:enderman", mobs_mc.spawn.solid, {"air"}, 0, 7, 30, 19000, 2, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
+mobs:spawn_specific("mobs_mc:enderman", "overworld", "ground", 0, 7, 30, 19000, 2, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
 -- Nether spawn (rare)
-mobs:spawn_specific("mobs_mc:enderman", mobs_mc.spawn.solid, {"air"}, 0, 7, 30, 27500, 4, mobs_mc.spawn_height.nether_min, mobs_mc.spawn_height.nether_max)
+mobs:spawn_specific("mobs_mc:enderman", "nether", "ground", 0, 7, 30, 27500, 4, mobs_mc.spawn_height.nether_min, mobs_mc.spawn_height.nether_max)
 
 -- spawn eggs
 mobs:register_egg("mobs_mc:enderman", S("Enderman"), "mobs_mc_spawn_icon_enderman.png", 0)
diff --git a/mods/ENTITIES/mobs_mc/ghast.lua b/mods/ENTITIES/mobs_mc/ghast.lua
index 7aed9395e1..e2f6b13692 100644
--- a/mods/ENTITIES/mobs_mc/ghast.lua
+++ b/mods/ENTITIES/mobs_mc/ghast.lua
@@ -75,7 +75,7 @@ mobs:register_mob("mobs_mc:ghast", {
 })
 
 
-mobs:spawn_specific("mobs_mc:ghast", mobs_mc.spawn.nether, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 18000, 2, mobs_mc.spawn_height.nether_min, mobs_mc.spawn_height.nether_max)
+mobs:spawn_specific("mobs_mc:ghast", "nether", "air", 0, minetest.LIGHT_MAX+1, 30, 18000, 2, mobs_mc.spawn_height.nether_min, mobs_mc.spawn_height.nether_max)
 
 -- fireball (projectile)
 mobs:register_arrow("mobs_mc:fireball", {
diff --git a/mods/ENTITIES/mobs_mc/guardian_elder.lua b/mods/ENTITIES/mobs_mc/guardian_elder.lua
index a58a4a5b76..089f6e38f7 100644
--- a/mods/ENTITIES/mobs_mc/guardian_elder.lua
+++ b/mods/ENTITIES/mobs_mc/guardian_elder.lua
@@ -106,7 +106,7 @@ mobs:register_mob("mobs_mc:guardian_elder", {
 	view_range = 16,
 })
 
--- Spawning disabled due to size issues
+-- Spawning disabled due to size issues <- what do you mean? -j4i
 -- TODO: Re-enable spawning
 -- mobs:spawn_specific("mobs_mc:guardian_elder", mobs_mc.spawn.water, mobs_mc.spawn_water, 0, minetest.LIGHT_MAX+1, 30, 40000, 2, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.water-18)
 
diff --git a/mods/ENTITIES/mobs_mc/horse.lua b/mods/ENTITIES/mobs_mc/horse.lua
index 3da63831ee..00c292c1de 100644
--- a/mods/ENTITIES/mobs_mc/horse.lua
+++ b/mods/ENTITIES/mobs_mc/horse.lua
@@ -510,8 +510,8 @@ mobs:register_mob("mobs_mc:mule", mule)
 
 --===========================
 --Spawn Function
-mobs:spawn_specific("mobs_mc:horse", mobs_mc.spawn.grassland_savanna, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 15000, 4, mobs_mc.spawn_height.water+3, mobs_mc.spawn_height.overworld_max)
-mobs:spawn_specific("mobs_mc:donkey", mobs_mc.spawn.grassland_savanna, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 15000, 4, mobs_mc.spawn_height.water+3, mobs_mc.spawn_height.overworld_max)
+mobs:spawn_specific("mobs_mc:horse", "overworld", "ground", 0, minetest.LIGHT_MAX+1, 30, 15000, 4, mobs_mc.spawn_height.water+3, mobs_mc.spawn_height.overworld_max)
+mobs:spawn_specific("mobs_mc:donkey", "overworld", "ground", 0, minetest.LIGHT_MAX+1, 30, 15000, 4, mobs_mc.spawn_height.water+3, mobs_mc.spawn_height.overworld_max)
 
 -- spawn eggs
 mobs:register_egg("mobs_mc:horse", S("Horse"), "mobs_mc_spawn_icon_horse.png", 0)
diff --git a/mods/ENTITIES/mobs_mc/llama.lua b/mods/ENTITIES/mobs_mc/llama.lua
index 36d020a656..0efb8e0ab2 100644
--- a/mods/ENTITIES/mobs_mc/llama.lua
+++ b/mods/ENTITIES/mobs_mc/llama.lua
@@ -217,7 +217,7 @@ mobs:register_mob("mobs_mc:llama", {
 })
 
 --spawn
-mobs:spawn_specific("mobs_mc:llama", mobs_mc.spawn.savanna, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 15000, 5, mobs_mc.spawn_height.water+15, mobs_mc.spawn_height.overworld_max)
+mobs:spawn_specific("mobs_mc:llama", "overworld", "ground", 0, minetest.LIGHT_MAX+1, 30, 15000, 5, mobs_mc.spawn_height.water+15, mobs_mc.spawn_height.overworld_max)
 
 -- spawn eggs
 mobs:register_egg("mobs_mc:llama", S("Llama"), "mobs_mc_spawn_icon_llama.png", 0)
diff --git a/mods/ENTITIES/mobs_mc/ocelot.lua b/mods/ENTITIES/mobs_mc/ocelot.lua
index eca74d3ba5..3b5273185e 100644
--- a/mods/ENTITIES/mobs_mc/ocelot.lua
+++ b/mods/ENTITIES/mobs_mc/ocelot.lua
@@ -152,6 +152,9 @@ mobs:register_mob("mobs_mc:cat", cat)
 local base_spawn_chance = 5000
 
 -- Spawn ocelot
+--they get the same as the llama because I'm trying to rework so much of this code right now -j4i
+mobs:spawn_specific("mobs_mc:ocelot", "overworld", "ground", 0, minetest.LIGHT_MAX+1, 30, 15000, 5, mobs_mc.spawn_height.water+15, mobs_mc.spawn_height.overworld_max)
+--[[
 mobs:spawn({
 	name = "mobs_mc:ocelot",
 	nodes = mobs_mc.spawn.jungle,
@@ -163,8 +166,8 @@ mobs:spawn({
 	min_height = mobs_mc.spawn_height.water+1, -- Right above ocean level
 	max_height = mobs_mc.spawn_height.overworld_max,
 	on_spawn = function(self, pos)
-		--[[ Note: Minecraft has a 1/3 spawn failure rate.
-		In this mod it is emulated by reducing the spawn rate accordingly (see above). ]]
+		 Note: Minecraft has a 1/3 spawn failure rate.
+		In this mod it is emulated by reducing the spawn rate accordingly (see above). 
 
 		-- 1/7 chance to spawn 2 ocelot kittens
 		if pr:next(1,7) == 1 then
@@ -207,6 +210,7 @@ mobs:spawn({
 		end
 	end,
 })
+]]--
 
 -- spawn eggs
 -- FIXME: The spawn icon shows a cat texture, not an ocelot texture
diff --git a/mods/ENTITIES/mobs_mc/parrot.lua b/mods/ENTITIES/mobs_mc/parrot.lua
index 407cb44667..c67263fb92 100644
--- a/mods/ENTITIES/mobs_mc/parrot.lua
+++ b/mods/ENTITIES/mobs_mc/parrot.lua
@@ -90,8 +90,8 @@ mobs:register_mob("mobs_mc:parrot", {
 
 })
 
--- Parrots spawn rarely in jungles. TODO: Also check for jungle *biome*
-mobs:spawn_specific("mobs_mc:parrot", {"mcl_core:jungletree", "mcl_core:jungleleaves"}, {"air"}, 0, minetest.LIGHT_MAX+1, 7, 30000, 1, mobs_mc.spawn_height.water+7, mobs_mc.spawn_height.overworld_max)
+-- Parrots spawn rarely in jungles. TODO: Also check for jungle *biome* <- I'll get to this eventually -j4i
+mobs:spawn_specific("mobs_mc:parrot","overworld", "air", 0, minetest.LIGHT_MAX+1, 7, 30000, 1, mobs_mc.spawn_height.water+7, mobs_mc.spawn_height.overworld_max)
 
 -- spawn eggs
 mobs:register_egg("mobs_mc:parrot", S("Parrot"), "mobs_mc_spawn_icon_parrot.png", 0)
diff --git a/mods/ENTITIES/mobs_mc/pig.lua b/mods/ENTITIES/mobs_mc/pig.lua
index 38700b6ca7..143fcb4950 100644
--- a/mods/ENTITIES/mobs_mc/pig.lua
+++ b/mods/ENTITIES/mobs_mc/pig.lua
@@ -182,7 +182,7 @@ mobs:register_mob("mobs_mc:pig", {
 	end,
 })
 
-mobs:spawn_specific("mobs_mc:pig", mobs_mc.spawn.grassland, {"air"}, 9, minetest.LIGHT_MAX+1, 30, 15000, 8, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
+mobs:spawn_specific("mobs_mc:pig", "overworld", "ground", 9, minetest.LIGHT_MAX+1, 30, 15000, 8, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
 
 -- spawn eggs
 mobs:register_egg("mobs_mc:pig", S("Pig"), "mobs_mc_spawn_icon_pig.png", 0)
diff --git a/mods/ENTITIES/mobs_mc/polar_bear.lua b/mods/ENTITIES/mobs_mc/polar_bear.lua
index 459ca29b4a..745c13a26c 100644
--- a/mods/ENTITIES/mobs_mc/polar_bear.lua
+++ b/mods/ENTITIES/mobs_mc/polar_bear.lua
@@ -67,7 +67,7 @@ mobs:register_mob("mobs_mc:polar_bear", {
 })
 
 
-mobs:spawn_specific("mobs_mc:polar_bear", mobs_mc.spawn.snow, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 7000, 3, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
+mobs:spawn_specific("mobs_mc:polar_bear", "overworld", "ground", 0, minetest.LIGHT_MAX+1, 30, 7000, 3, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
 
 -- spawn egg
 mobs:register_egg("mobs_mc:polar_bear", S("Polar Bear"), "mobs_mc_spawn_icon_polarbear.png", 0)
diff --git a/mods/ENTITIES/mobs_mc/rabbit.lua b/mods/ENTITIES/mobs_mc/rabbit.lua
index e167649f6f..f09a70584a 100644
--- a/mods/ENTITIES/mobs_mc/rabbit.lua
+++ b/mods/ENTITIES/mobs_mc/rabbit.lua
@@ -107,8 +107,11 @@ end
 mobs:register_mob("mobs_mc:killer_bunny", killer_bunny)
 
 -- Mob spawning rules.
--- Different skins depending on spawn location
+-- Different skins depending on spawn location <- we'll get to this when the spawning algorithm is fleshed out
 
+mobs:spawn_specific("mobs_mc:rabbit", "overworld", "ground", 9, minetest.LIGHT_MAX+1, 30, 15000, 8, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
+
+--[[
 local spawn = {
 	name = "mobs_mc:rabbit",
 	neighbors = {"air"},
@@ -165,6 +168,7 @@ spawn_grass.on_spawn = function(self, pos)
 	self.object:set_properties({textures = self.base_texture})
 end
 mobs:spawn(spawn_grass)
+]]--
 
 -- Spawn egg
 mobs:register_egg("mobs_mc:rabbit", S("Rabbit"), "mobs_mc_spawn_icon_rabbit.png", 0)
diff --git a/mods/ENTITIES/mobs_mc/sheep.lua b/mods/ENTITIES/mobs_mc/sheep.lua
index 84650b4ddd..b3400ab5f5 100644
--- a/mods/ENTITIES/mobs_mc/sheep.lua
+++ b/mods/ENTITIES/mobs_mc/sheep.lua
@@ -303,7 +303,7 @@ mobs:register_mob("mobs_mc:sheep", {
 		end
 	end,
 })
-mobs:spawn_specific("mobs_mc:sheep", mobs_mc.spawn.grassland, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 15000, 3, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
+mobs:spawn_specific("mobs_mc:sheep", "overworld", "ground", 0, minetest.LIGHT_MAX+1, 30, 15000, 3, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
 
 -- spawn eggs
 mobs:register_egg("mobs_mc:sheep", S("Sheep"), "mobs_mc_spawn_icon_sheep.png", 0)
diff --git a/mods/ENTITIES/mobs_mc/shulker.lua b/mods/ENTITIES/mobs_mc/shulker.lua
index faaf2ac405..583c5eed1e 100644
--- a/mods/ENTITIES/mobs_mc/shulker.lua
+++ b/mods/ENTITIES/mobs_mc/shulker.lua
@@ -81,4 +81,4 @@ mobs:register_arrow("mobs_mc:shulkerbullet", {
 
 mobs:register_egg("mobs_mc:shulker", S("Shulker"), "mobs_mc_spawn_icon_shulker.png", 0)
 
-mobs:spawn_specific("mobs_mc:shulker", mobs_mc.spawn.end_city, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 5000, 2, mobs_mc.spawn_height.end_min, mobs_mc.spawn_height.end_max)
+mobs:spawn_specific("mobs_mc:shulker", "end", "ground", 0, minetest.LIGHT_MAX+1, 30, 5000, 2, mobs_mc.spawn_height.end_min, mobs_mc.spawn_height.end_max)
diff --git a/mods/ENTITIES/mobs_mc/skeleton+stray.lua b/mods/ENTITIES/mobs_mc/skeleton+stray.lua
index cb12e905d5..84e51c5170 100644
--- a/mods/ENTITIES/mobs_mc/skeleton+stray.lua
+++ b/mods/ENTITIES/mobs_mc/skeleton+stray.lua
@@ -139,13 +139,13 @@ table.insert(stray.drops, {
 mobs:register_mob("mobs_mc:stray", stray)
 
 -- Overworld spawn
-mobs:spawn_specific("mobs_mc:skeleton", mobs_mc.spawn.solid, {"air"}, 0, 7, 20, 17000, 2, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
+mobs:spawn_specific("mobs_mc:skeleton", "overworld", "ground", 0, 7, 20, 17000, 2, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
 -- Nether spawn
-mobs:spawn_specific("mobs_mc:skeleton", mobs_mc.spawn.nether_fortress, {"air"}, 0, 7, 30, 10000, 3, mobs_mc.spawn_height.nether_min, mobs_mc.spawn_height.nether_max)
+mobs:spawn_specific("mobs_mc:skeleton", "nether", "ground", 0, 7, 30, 10000, 3, mobs_mc.spawn_height.nether_min, mobs_mc.spawn_height.nether_max)
 
 -- Stray spawn
 -- TODO: Spawn directly under the sky
-mobs:spawn_specific("mobs_mc:stray", mobs_mc.spawn.snow, {"air"}, 0, 7, 20, 19000, 2, mobs_mc.spawn_height.water, mobs_mc.spawn_height.overworld_max)
+mobs:spawn_specific("mobs_mc:stray", "overworld", "ground", 0, 7, 20, 19000, 2, mobs_mc.spawn_height.water, mobs_mc.spawn_height.overworld_max)
 
 
 -- spawn eggs
diff --git a/mods/ENTITIES/mobs_mc/skeleton_wither.lua b/mods/ENTITIES/mobs_mc/skeleton_wither.lua
index e4a1f86fc6..d9de90d84b 100644
--- a/mods/ENTITIES/mobs_mc/skeleton_wither.lua
+++ b/mods/ENTITIES/mobs_mc/skeleton_wither.lua
@@ -94,7 +94,7 @@ mobs:register_mob("mobs_mc:witherskeleton", {
 })
 
 --spawn
-mobs:spawn_specific("mobs_mc:witherskeleton", mobs_mc.spawn.nether_fortress, {"air"}, 0, 7, 30, 5000, 5, mobs_mc.spawn_height.nether_min, mobs_mc.spawn_height.nether_max)
+mobs:spawn_specific("mobs_mc:witherskeleton", "nether", "ground", 0, 7, 30, 5000, 5, mobs_mc.spawn_height.nether_min, mobs_mc.spawn_height.nether_max)
 
 -- spawn eggs
 mobs:register_egg("mobs_mc:witherskeleton", S("Wither Skeleton"), "mobs_mc_spawn_icon_witherskeleton.png", 0)
diff --git a/mods/ENTITIES/mobs_mc/slime+magma_cube.lua b/mods/ENTITIES/mobs_mc/slime+magma_cube.lua
index fd1f92bb49..2f9e8c8a90 100644
--- a/mods/ENTITIES/mobs_mc/slime+magma_cube.lua
+++ b/mods/ENTITIES/mobs_mc/slime+magma_cube.lua
@@ -157,9 +157,9 @@ mobs:register_mob("mobs_mc:slime_tiny", slime_tiny)
 local smin = mobs_mc.spawn_height.overworld_min
 local smax = mobs_mc.spawn_height.water - 23
 
-mobs:spawn_specific("mobs_mc:slime_tiny", mobs_mc.spawn.solid, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 12000, 4, smin, smax)
-mobs:spawn_specific("mobs_mc:slime_small", mobs_mc.spawn.solid, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 8500, 4, smin, smax)
-mobs:spawn_specific("mobs_mc:slime_big", mobs_mc.spawn.solid, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 10000, 4, smin, smax)
+mobs:spawn_specific("mobs_mc:slime_tiny", "overworld", "ground", 0, minetest.LIGHT_MAX+1, 30, 12000, 4, smin, smax)
+mobs:spawn_specific("mobs_mc:slime_small", "overworld", "ground", 0, minetest.LIGHT_MAX+1, 30, 8500, 4, smin, smax)
+mobs:spawn_specific("mobs_mc:slime_big", "overworld", "ground", 0, minetest.LIGHT_MAX+1, 30, 10000, 4, smin, smax)
 
 -- Magma cube
 local magma_cube_big = {
@@ -272,13 +272,13 @@ mobs:register_mob("mobs_mc:magma_cube_tiny", magma_cube_tiny)
 local mmin = mobs_mc.spawn_height.nether_min
 local mmax = mobs_mc.spawn_height.nether_max
 
-mobs:spawn_specific("mobs_mc:magma_cube_tiny", mobs_mc.spawn.nether, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 15000, 4, mmin, mmax)
-mobs:spawn_specific("mobs_mc:magma_cube_small", mobs_mc.spawn.nether, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 15500, 4, mmin, mmax)
-mobs:spawn_specific("mobs_mc:magma_cube_big", mobs_mc.spawn.nether, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 16000, 4, mmin, mmax)
+mobs:spawn_specific("mobs_mc:magma_cube_tiny", "nether", "ground", 0, minetest.LIGHT_MAX+1, 30, 15000, 4, mmin, mmax)
+mobs:spawn_specific("mobs_mc:magma_cube_small", "nether", "ground", 0, minetest.LIGHT_MAX+1, 30, 15500, 4, mmin, mmax)
+mobs:spawn_specific("mobs_mc:magma_cube_big", "nether", "ground", 0, minetest.LIGHT_MAX+1, 30, 16000, 4, mmin, mmax)
 
-mobs:spawn_specific("mobs_mc:magma_cube_tiny", mobs_mc.spawn.nether_fortress, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 11000, 4, mmin, mmax)
-mobs:spawn_specific("mobs_mc:magma_cube_small", mobs_mc.spawn.nether_fortress, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 11100, 4, mmin, mmax)
-mobs:spawn_specific("mobs_mc:magma_cube_big", mobs_mc.spawn.nether_fortress, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 11200, 4, mmin, mmax)
+--mobs:spawn_specific("mobs_mc:magma_cube_tiny", mobs_mc.spawn.nether_fortress, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 11000, 4, mmin, mmax)
+--mobs:spawn_specific("mobs_mc:magma_cube_small", mobs_mc.spawn.nether_fortress, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 11100, 4, mmin, mmax)
+--mobs:spawn_specific("mobs_mc:magma_cube_big", mobs_mc.spawn.nether_fortress, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 11200, 4, mmin, mmax)
 
 
 -- spawn eggs
diff --git a/mods/ENTITIES/mobs_mc/spider.lua b/mods/ENTITIES/mobs_mc/spider.lua
index 0bb03a9c7c..1361e6a3ae 100644
--- a/mods/ENTITIES/mobs_mc/spider.lua
+++ b/mods/ENTITIES/mobs_mc/spider.lua
@@ -87,7 +87,7 @@ cave_spider.sounds.base_pitch = 1.25
 mobs:register_mob("mobs_mc:cave_spider", cave_spider)
 
 
-mobs:spawn_specific("mobs_mc:spider", mobs_mc.spawn.solid, {"air"}, 0, 7, 30, 17000, 2, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
+mobs:spawn_specific("mobs_mc:spider", "overworld", "ground", 0, 7, 30, 17000, 2, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
 
 -- spawn eggs
 mobs:register_egg("mobs_mc:spider", S("Spider"), "mobs_mc_spawn_icon_spider.png", 0)
diff --git a/mods/ENTITIES/mobs_mc/squid.lua b/mods/ENTITIES/mobs_mc/squid.lua
index 1877a2104c..2dbb7c557d 100644
--- a/mods/ENTITIES/mobs_mc/squid.lua
+++ b/mods/ENTITIES/mobs_mc/squid.lua
@@ -62,7 +62,7 @@ mobs:register_mob("mobs_mc:squid", {
 
 local water = mobs_mc.spawn_height.water
 --name, nodes, neighbours, minlight, maxlight, interval, chance, active_object_count, min_height, max_height
-mobs:spawn_specific("mobs_mc:squid", mobs_mc.spawn.water, {mobs_mc.items.water_source}, 0, minetest.LIGHT_MAX+1, 30, 5500, 3, water-16, water)
+mobs:spawn_specific("mobs_mc:squid", "overworld", "water", 0, minetest.LIGHT_MAX+1, 30, 5500, 3, water-16, water)
 
 -- spawn eggs
 mobs:register_egg("mobs_mc:squid", S("Squid"), "mobs_mc_spawn_icon_squid.png", 0)
diff --git a/mods/ENTITIES/mobs_mc/villager.lua b/mods/ENTITIES/mobs_mc/villager.lua
index 68644266f4..0b53d8015f 100644
--- a/mods/ENTITIES/mobs_mc/villager.lua
+++ b/mods/ENTITIES/mobs_mc/villager.lua
@@ -1074,7 +1074,7 @@ mobs:register_mob("mobs_mc:villager", {
 
 
 
-mobs:spawn_specific("mobs_mc:villager", mobs_mc.spawn.village, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 20, 4, mobs_mc.spawn_height.water+1, mobs_mc.spawn_height.overworld_max)
+mobs:spawn_specific("mobs_mc:villager", "overworld", "ground", 0, minetest.LIGHT_MAX+1, 30, 20, 4, mobs_mc.spawn_height.water+1, mobs_mc.spawn_height.overworld_max)
 
 -- spawn eggs
 mobs:register_egg("mobs_mc:villager", S("Villager"), "mobs_mc_spawn_icon_villager.png", 0)
diff --git a/mods/ENTITIES/mobs_mc/villager_zombie.lua b/mods/ENTITIES/mobs_mc/villager_zombie.lua
index 09539fa76e..bcede2183c 100644
--- a/mods/ENTITIES/mobs_mc/villager_zombie.lua
+++ b/mods/ENTITIES/mobs_mc/villager_zombie.lua
@@ -146,8 +146,8 @@ mobs:register_mob("mobs_mc:villager_zombie", {
 	harmed_by_heal = true,
 })
 
-mobs:spawn_specific("mobs_mc:villager_zombie", mobs_mc.spawn.village, {"air"}, 0, 7, 30, 4090, 4, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
-mobs:spawn_specific("mobs_mc:villager_zombie", mobs_mc.spawn.solid, {"air"}, 0, 7, 30, 60000, 4, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
+mobs:spawn_specific("mobs_mc:villager_zombie", "overworld", "ground", 0, 7, 30, 4090, 4, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
+mobs:spawn_specific("mobs_mc:villager_zombie", "overworld", "ground", 0, 7, 30, 60000, 4, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
 
 -- spawn eggs
 mobs:register_egg("mobs_mc:villager_zombie", S("Zombie Villager"), "mobs_mc_spawn_icon_zombie_villager.png", 0)
diff --git a/mods/ENTITIES/mobs_mc/witch.lua b/mods/ENTITIES/mobs_mc/witch.lua
index 383cbd36fe..f9f9b8d1f0 100644
--- a/mods/ENTITIES/mobs_mc/witch.lua
+++ b/mods/ENTITIES/mobs_mc/witch.lua
@@ -99,7 +99,7 @@ mobs:register_arrow("mobs_mc:potion_arrow", {
 	end
 })
 
--- TODO: Spawn when witch works properly
+-- TODO: Spawn when witch works properly <- eventually -j4i
 --mobs:spawn_specific("mobs_mc:witch", mobs_mc.spawn.jungle, {"air"}, 0, minetest.LIGHT_MAX-6, 12, 20000, 2, mobs_mc.spawn_height.water-6, mobs_mc.spawn_height.overworld_max)
 
 -- spawn eggs
diff --git a/mods/ENTITIES/mobs_mc/wolf.lua b/mods/ENTITIES/mobs_mc/wolf.lua
index fe30318954..953c2df729 100644
--- a/mods/ENTITIES/mobs_mc/wolf.lua
+++ b/mods/ENTITIES/mobs_mc/wolf.lua
@@ -232,6 +232,6 @@ end
 mobs:register_mob("mobs_mc:dog", dog)
 
 -- Spawn
-mobs:spawn_specific("mobs_mc:wolf", mobs_mc.spawn.wolf, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 9000, 7, mobs_mc.spawn_height.water+3, mobs_mc.spawn_height.overworld_max)
+mobs:spawn_specific("mobs_mc:wolf", "overworld", "ground", 0, minetest.LIGHT_MAX+1, 30, 9000, 7, mobs_mc.spawn_height.water+3, mobs_mc.spawn_height.overworld_max)
 
 mobs:register_egg("mobs_mc:wolf", S("Wolf"), "mobs_mc_spawn_icon_wolf.png", 0)
diff --git a/mods/ENTITIES/mobs_mc/zombie.lua b/mods/ENTITIES/mobs_mc/zombie.lua
index df9727d34f..64f99d34dd 100644
--- a/mods/ENTITIES/mobs_mc/zombie.lua
+++ b/mods/ENTITIES/mobs_mc/zombie.lua
@@ -135,11 +135,11 @@ mobs:register_mob("mobs_mc:baby_husk", baby_husk)
 
 -- Spawning
 
-mobs:spawn_specific("mobs_mc:zombie", mobs_mc.spawn.solid, {"air"}, 0, 7, 30, 6000, 4, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
+mobs:spawn_specific("mobs_mc:zombie", "overworld", "ground", 0, 7, 30, 6000, 4, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
 -- Baby zombie is 20 times less likely than regular zombies
-mobs:spawn_specific("mobs_mc:baby_zombie", mobs_mc.spawn.solid, {"air"}, 0, 7, 30, 60000, 4, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
-mobs:spawn_specific("mobs_mc:husk", mobs_mc.spawn.desert, {"air"}, 0, 7, 30, 6500, 4, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
-mobs:spawn_specific("mobs_mc:baby_husk", mobs_mc.spawn.desert, {"air"}, 0, 7, 30, 65000, 4, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
+mobs:spawn_specific("mobs_mc:baby_zombie", "overworld", "ground", 0, 7, 30, 60000, 4, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
+mobs:spawn_specific("mobs_mc:husk", "overworld", "ground", 0, 7, 30, 6500, 4, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
+mobs:spawn_specific("mobs_mc:baby_husk", "overworld", "ground", 0, 7, 30, 65000, 4, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
 
 -- Spawn eggs
 mobs:register_egg("mobs_mc:husk", S("Husk"), "mobs_mc_spawn_icon_husk.png", 0)
diff --git a/mods/ENTITIES/mobs_mc/zombiepig.lua b/mods/ENTITIES/mobs_mc/zombiepig.lua
index 8c29a4bff7..e996425c8b 100644
--- a/mods/ENTITIES/mobs_mc/zombiepig.lua
+++ b/mods/ENTITIES/mobs_mc/zombiepig.lua
@@ -111,12 +111,12 @@ baby_pigman.child = 1
 mobs:register_mob("mobs_mc:baby_pigman", baby_pigman)
 
 -- Regular spawning in the Nether
-mobs:spawn_specific("mobs_mc:pigman", mobs_mc.spawn.solid, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 6000, 3, mobs_mc.spawn_height.nether_min, mobs_mc.spawn_height.nether_max)
+mobs:spawn_specific("mobs_mc:pigman", "nether", "ground", 0, minetest.LIGHT_MAX+1, 30, 6000, 3, mobs_mc.spawn_height.nether_min, mobs_mc.spawn_height.nether_max)
 -- Baby zombie is 20 times less likely than regular zombies
-mobs:spawn_specific("mobs_mc:baby_pigman", mobs_mc.spawn.solid, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 100000, 4, mobs_mc.spawn_height.nether_min, mobs_mc.spawn_height.nether_max)
+mobs:spawn_specific("mobs_mc:baby_pigman", "nether", "ground", 0, minetest.LIGHT_MAX+1, 30, 100000, 4, mobs_mc.spawn_height.nether_min, mobs_mc.spawn_height.nether_max)
 
 -- Spawning in Nether portals in the Overworld
-mobs:spawn_specific("mobs_mc:pigman", mobs_mc.spawn.nether_portal, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 500, 4, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
+--mobs:spawn_specific("mobs_mc:pigman", mobs_mc.spawn.nether_portal, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 500, 4, mobs_mc.spawn_height.overworld_min, mobs_mc.spawn_height.overworld_max)
 
 -- spawn eggs
 mobs:register_egg("mobs_mc:pigman", S("Zombie Pigman"), "mobs_mc_spawn_icon_zombie_pigman.png", 0)