Transformice is a multiplayer Flash game, where you are a small mouse out to get a piece of cheese and who got to take it back into the mouse hole. The game includes a physics engine, so the multiplayer aspect gets a lot of fun when many players rush forward blindly into one direction.
The new client supports Adobe Air. Support systems: Windows 7/XP or old systems. Chating in window: Tribe chat, whispers!
Transformice can be played directly on www.transformice.com, but also throught this standalone.