Punch Club VS Counter-Strike

PunchLab - Track the strikes you throw at the punching bag

Call of Duty - Call of Duty is a first-person and third-person shooter series by Infinity Ward.

BotBoxer - A first ever robotic punching bag with computer vision

Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.

Timerly - A real interval timer

Unreal Tournament - Unreal is a series of first-person shooter video games developed by Epic Games.