The author mentioned Unity in the README, but every other game engine I know requires NativeAOT support. I hope it doesn't run into the limitations of NativeAOT otherwise it's just Unity-only.
Even Unity games compile AOT via IL2CPP. It's optional on PC/macOS but required for most other platforms. The only real reason games may not build with it enabled is if they want to allow modding via IL decompilation.