Carbon Games and Ubisoft has just announced a beta of their upcoming Xbox 360 exclusive title AirMech Arena. It will begin on Wednesday next week and everyone with an Xbox Live account can join the fun (multiplayer requires Gold as usual though).
AirMech Arena offers enormous powerful robots with Transformers shapeshifting powers, an ability that will come handy when swarms of enemies are attacking the fortresses you are supposed to defend. If you do your part well and conquer some other bases at the same time - you'll be able to unlock new stuff such as more robots, more powers, bigger weapons and better opportunities to design your fighter in a unique way.
The beta will offer both traditional singleplayer and co-op, but also team based multiplayer with teams of up to 2-3 players. If Carbon Games are to be believed, team work is the key to success here.
If you want to try the beta out, just surf over to airmecharena.com and sign up.