Brink

Brink is a free-to-play first-person-shoot developed by Splash Damage and published by Bethesda Softworks. The game blends, single-player, co-op, and multiplayer modes into a single experience. In Brink, players occupy the Ark, a floating city built by men. The city is on the brink of war, despite being built as a self-sufficient, 100% green habitat. Brink allows players to customize their characters to create a unique appearance as well as build. Players can fight their way through the single-player campaign or choose to go online and participate in co-op activities or engage in full-blown multiplayer action. Long time FPS players should feel right at home with Brink, as it features a control scheme common to the genre. Brink is available to play via Steam.