You probably all have seen those timelapse videos of showing gifted artists drawing cool images in photoshop, paint and similar, but this thing is a bit different:
It shows Markus Persson, creator of
Minecraft developing a game named
Metagun from scratch in 48 hours (and in Java, looks at least like it for me). Not sure if this is as interesting as watching those 2d drawing timelapses, but it is a fun idea :)