The default game bundled in the Minetest engine.
Unzip the archive, rename the folder to minetest_game and place it in .. minetest/games/
GNU/Linux: If you use a system-wide installation place it in ~/.minetest/games/.
The Minetest engine can be found at GitHub.
For further information or help, see:
The Minetest Game GitHub master HEAD is generally compatible with the GitHub
master HEAD of the Minetest engine.
Additionally, when the Minetest engine is tagged to be a certain version (e.g. 0.4.10), Minetest Game is tagged with the version too.
When stable releases are made, Minetest Game and the Minetest engine is packaged and made available at https://minetest.net/downloads/