If you have an Alienware Arena account, which I think is free and open to everyone, you can get a closed beta key for AirMech here.
AirMech is a fast paced RTS based on the old Sega Genesis game Herzog Zwei. And while I never played the original, I only ever heard good things about it. It offers 3v3 PVP and PVE and while I've only played a few rounds and really liking what I've seen so far. The game will be free to play with premium content similar to LoL.
An old alpha gameplay video that shows some 3v3.
[AirMech] Alienware Closed Beta Giveaway
Moderator: Executive
[AirMech] Alienware Closed Beta Giveaway
Get a free Planetside 2 starter pack! Shameless PS2 recruitment link!
BF3C2-L • Hitcorp • Staff Sergeant ~§~ BF3C3-L • PRIDe • Captain ~§~ BF3C4-L • Gladius • Captain BF3C5-W • Legion of Doom • Captain
BF3C6-L • UNSC • PFC ~§~ BF4C1-L • Allies • PRVT ~§~ BF4C2-W • 9th MEU • P2C
BF4C3 • Corleone Family • HC
BF3C2-L • Hitcorp • Staff Sergeant ~§~ BF3C3-L • PRIDe • Captain ~§~ BF3C4-L • Gladius • Captain BF3C5-W • Legion of Doom • Captain
BF3C6-L • UNSC • PFC ~§~ BF4C1-L • Allies • PRVT ~§~ BF4C2-W • 9th MEU • P2C
BF4C3 • Corleone Family • HC
BF4C4 • SAD JANUS • HC