Call of Duty - Call of Duty is a first-person and third-person shooter series by Infinity Ward.
Blockland - Blockland is a non-competitive multiplayer sandbox-style construction game. It's kind of like playing with legos on the internet.
Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.
Roblox - Reimagining the way people come together.
Battlefield - The latest news and updates for all things Battlefield, the EA and DICE video game franchise.
RealmCraft - RealmCraft is a sandbox game where you can build, craft, and survive in a procedurally generated infinity 3D world.