If you need a tactical shooter fix this weekend, then look no further than Operation Flashpoint 2: Dragon Rising. The game is discounted 75% this weekend, down from $29.99 to $7.49. This'll get you some sweet four player co-op action on top of some really pretty graphics. You can check out our review of the game, but I think you'll be hard pressed to turn down a low price for the title.
Source: Store.steampowered.com