Puzzlemon Battle Force (working title) is an element/creature-type based puzzle game that involves tile matching for creature summoning and a stats based combat system. LÖVE engine is currently required to run game. http://love2d.org/
Polopoly's a porting of the classic Monopoly. Polopoly's not limited to the original rules, but also uses different maps with crossing streets etc. It's not just only an online playable game, but serves as a tutorial how to build a simple game, too.