Well, there's a common theme (some variety of tetris knock-off) with a rather rare feature (Null model support for 2P) Unfortunately, I haven't been able to test if emulators would in any way handle null modem play. As it stands now, trying to select two player just hangs the game.

The tetris variety is rather difficult; it consists of trying to put various triangles together to create squares to eliminate. Complicating the matter is you only get to flip (space key) rather than rotate 90 degrees.

Download