Genuine question? Yes Minecraft is closed source but the Java version can be decompiled and a lot has been reverse engineered.
There are a few open source Minecraft clones. The most popular is Luanti formally mine test which is more like an engine. The most popular? Minecraft clone made with it is named VoxeLibre formally mineclone 2.
All that really matters in the end is decompileability or source code availability. The other licensing stuff is extra and doesn’t matter because businesses fail and people die. When incapacitated, or sunk into obscurity it’s yours for the taking.
Genuine question? Yes Minecraft is closed source but the Java version can be decompiled and a lot has been reverse engineered.
There are a few open source Minecraft clones. The most popular is Luanti formally mine test which is more like an engine. The most popular? Minecraft clone made with it is named VoxeLibre formally mineclone 2.
You mean “formerly”
All that really matters in the end is decompileability or source code availability. The other licensing stuff is extra and doesn’t matter because businesses fail and people die. When incapacitated, or sunk into obscurity it’s yours for the taking.