Build and Shoot

Choose your side in this multiplayer stealth game between the high powered Guards and the fast and elusive Thieves using your wits to outsmart the enemies or just make your way to the goal using bullets.
It's a game with simple rules, emergent gameplay and very high replayability. You'll love it :D

Of Guards and Thieves is a new multiplayer game where the guards defend six items while the thieves attempt to steal one of those items (and the guards don't know which one). There is also a zombie game mode, and several other game modes are planned.

The game is high addicting, and the number of players is growing quite rapidly. A few weeks ago I only saw about 15 people on at a time (during the day in the US). I now routinely see 70+ players, and quite a few more servers.

Link: http://www.ofguardsandthieves.com/

Looks great! Definitely going to try it out.

Wow, this game is great! I played a few rounds of Zombie Rush, and it was really fun.

I've played this before. The concept is really good, there weren't many player back then.