Rocksmith+ - Rocksmith builds off of the fundamentals of music games like Rock Band and Guitar Hero by offering fundamental lessons in actually playing guitar.
Call of Duty - Call of Duty is a first-person and third-person shooter series by Infinity Ward.
Osu - Osu is Music, Rhythm, Single and Multiplayer video game developed by Dean Herbert.
Quake - Quake is a series of first-person shooter video games released by id Software.
World in Audition - World in Audition is an Addictive, Dancing and Music Simulation.
Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.