Team Fortress 2 (TF2) is the sequel to the game that put class-based, multiplayer team warfare on the map. One of the most popular online action games of all time, TF2 delivers constant free updates including new game modes, maps, equipment and, most importantly, hats.
tags: fast-paced first-person-shooter free-to-play multiplayer teamXonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux. The project is geared towards providing addictive arena shooter gameplay which is all spawned and driven by the community itself. Xonotic is a direct successor of Nexuiz with years of development between them, and it aims to become the best possible open-source FPS (first-person-shooter) of its kind.
tags: Portable arena-shooter darkplaces first-person-shooter flossRed Eclipse is a fun-filled new take on the first person arena shooter, built as a total conversion of Cube Engine 2, which lends itself toward a balanced gameplay, with a general theme of agility in a variety of environments.
tags: arena-shooter first-person-shooter opengl sdlOverwatch is a team-based shooter where heroes do battle in a world of conflict.
tags: competitive first-person-shooter fps-games integrated-chat multiplayerCube 2: Sauerbraten is a free multiplayer/singleplayer first person shooter, built as a major redesign of the Cube FPS.
tags: Discontinued Portable cube first-person-shooter gamesZandronum is a multiplayer oriented port, based off Skulltag, for Doom and Doom II by id Software.
tags: first-person-shooter free-to-play games multiplayer online-gaming