Calmerry - Feel calm with online therapy
Quake - Quake is a series of first-person shooter video games released by id Software.
One-Minute Anxiety Helper - Digital coach to help in moments of stress and anxiety
Call of Duty - Call of Duty is a first-person and third-person shooter series by Infinity Ward.
Pocketcoach - Your coach for Coronavirus anxiety
Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.