This is an amazing bundle right here.

Each of these games deliver a unique, beautiful, and unforgettable single player experience (except Crysis Wars: it's multiplayer). Crysis 1 is the crowning gem of the bundle. It's arguably the best first person shooter on PC. Even though it's the oldest game in the bundle, it still feels fresh and exciting. There's a few rough parts like there are in any game, *cough* the tank level *cough* but everything else is phenomenal which outshines the problems. The other two singleplayer games: warhead and crysis 2, are both improvements and more story-driven. They're not quite as open-world as the first (especially 2) but still very good games, they just stand in the shadow of the original. Crysis wars is the all multiplayer one; it's a good change from BF3 or COD if you're looking for a multiplayer shooter experience.

If you like first person shooter games at all, you need to have these games. There's no reason not to buy them unless you're computer can't handle them (they're very demanding!)