Cute! I liked that it's a multiplayer game, and simple enough for two people to play on the same computer. Minimalist but fun. The jumping seems a liiiiittle glitchy at times - sometimes i'll jump, almost reach a platform, start falling to a lower platform, then suddenly warp up to reach the platform i didn't quite reach? it might be something with how you're handling the collision detection? Overall, a nice little game!