'World of Tanks'
15 versus 15 world war II tank game. When creating a new account you start out with really shitty tier 1 tanks, but as you play you gradually unlock better and better tanks. I really like it, action is fun and there's a bit of variety playing as SPG (artillery), tanks or tank destroyers. Its a bit 'grindy' at times, but that also the part which keeps you playing, just got to unlock that next tank!
Rated 9/10 on 2011-10-01