Do you mean true multiplayer? That would be awesome! (Though I would absolultely have to get a proper gamepad before facing anyone, playing on the keyboard is not the best :-D)
Make the robots crash into each other before they crash into you!
Just a simple Spot The Difference game for young children - Work In Progress
The freeware first "Verse " of Troll Song (the full game will be a commercial title with 5 "verses")