Transformice is an awesome game, and has nothing to do with robots or transforming. But when looking for a fun online game, you don’t get better than this.
The game is simple. You, and a bunch of other people, are mice. Yes, it’s multiplayer. Your goal, get the cheese and get back to your mouse hole. The problem, their are many obstacles, like the cheese being too high to get to, or a pit that can’t be crossed. The solution, Their is a Shaman. The Shaman has god-loke powers, and can spawn many objects to help the mice in need.
Of course, the Shaman can kill everybody if he wants to. Plus, with 20+ mice, it can get hectic, and more often than not you’ll fight for the cheese rather than help each other. Which will lead to your death.
The levels are short, taking anywhere from 30s to 4ish minutes. This game is fun, but can be very challenging as well. Everyone should go play it. The games all about teamwork, but there’s always an idiot who gets in your way.
http://transformice.com/en/index.html
Oh, and you can Hats for your mice with the cheese you collect. Nice.