Counter Strike at it's best.

User Rating: 9 | Counter-Strike: Source PC
This game is still one of the best multiplayer games ever. It improves on the original counter strike in every way. The only bad things are that steam still doesn't have a filter option that allows you to search for games without bots, and that the AWP and the auto rifle are steal just as cheap as ever. This game has a great online community and it never get's old. The game runs really well on low/medium computers. The source engine rocks and is starting to get to the point where it is nearly bug free. The only other downside I can think of this game is that the online community has a lot of talented players so it's not very newb friendly, but you'll get the hang of it.