Ultrakillz

Ultrakillz has to be one of the worst names for a game, but regardless, this game is actually pretty cool. FPS (first-person shooter) games are generally more system intensive than most games which makes it impressive that the developers of this game managed to fit a multiplayer FPS game into a web browser. Basically, you log on to the game (alternatively you can play as a guest) and then you create a game in the lobby. There are not many players, but generally you should always be able to find a match as you log on after a few minutes. The game is also ranked and as you play more, you can achieve the higher ranks. Unfortunately the game lacks some polish to a degree, but if you can get over that then this game is a great way to kill some time. The game also significantly lacks depth and may get repetitive, so Ultrakillz is best if you are looking for a quick burst of fun. Higher latency can be a problem, but I live in a country quite far from the US and I did not experience any problems with lag.

Pros:
FPS games are rarely found in browser, let-alone multiplayer fps games
100% free
Game is competitive and ranked


Cons:
Not many players
Game lacks some polish
Lag may pose to be a problem

Play Ultrakillz now! http://www.ultrakillz.com/