The first version I found, 0020, is a small sprite moving on a multi-screen mesh and uses the pxtone library for music and sfx. There are some blocks serving as barriers.
The next version, 0030, added a keyconfig, a bar on the right side, displaying different names for the different screens, and the possibility to change the color of the sprite.
Now the version 0080 adds a network connection, but I haven't managed to get a connection yet.
The sketches on his homepage seem to hint at a multiplayer game.