The best First-Person Shooter alternative to Open SandBox is Team Fortress 2, which is free. If that doesn't work for you, our users have ranked more than 25 alternatives to Open SandBox, but unfortunately only two of them are First-Person Shooters.
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.
You ready for multiplayer action? Axis or Allies, victory or defeat, mayo or mustard… All will be decided in the ultimate FPS showdown, Blitz Brigade!.
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