Now that it's free to play, there's no reason not to try this team-based 2D airplane combat masterpiece.

A tower defense/FPS hybrid that's well worth a few hours of your time. Even more fun with friends.

Part turn-based space exploration, part RTS, part text-adventure: it all adds up to a quirky, unique, fun experience that's well worth your time.

Though cheap, Torchlight II is surprisingly fun and deep. Honestly, I feel it rivals Diablo II as my favorite ARPG, especially with a few friends.

Along with Rise of Nations, a great classic RTS for some weekend gaming with friends, especially those with lower-end systems.

A hybrid game with the overland strategic map of Heroes of Might & Magic and the turn-based party combat of traditional JRPGs.

An instant classic, and a great RTS for group play, especially for those with older machines. Gather some friends, and fight for supremacy.

Along with the first game, BG:II stands as one of the greatest CRPGs to-date, and still holds up to the test of time. The next best thing to actual D&D.

One of the greatest CRPGs to-date: it still holds up to the test of time, though the classic style seems harder for the newer generation to enjoy.