It’s more than that, it’s a whole engine and launcher combo for (mostly) voxel games, most of which again are Minecraft like, but some are very different. It’s made some huge leaps recently, graphics wise and functionality wise. The promise of the engine is also being fulfilled with more original game projects being developed for it.
Legitimate question, did you temporarily disable it, or did it just not manage to block this post because those words aren’t in the title?