Your library should not be without Garry's Mod. Many a clan has created hours of hilarious videos with the use of Garry's Mod. Hilarity!

A no-brainer. This is the ultimate fighting game. Your whole clan can line up like in the arcades, reserve their spot -winner stands. FIGHT!

Fun team oriented and class-based game. Great when you're aiming for the more relaxed and humorous rounds with your clan members.

This one almost speaks for itself. Fantastic skill-based shooter from the legenday id Software. A remake of Quake 3, the ultimate Arena game.

Very team oriented game. You won't win unless everyone works together.