No revenue estimate for GOG — its rating/review counts don't calibrate to sales the way Steam's do. Reviews and prices only.

Furi

You were captured. Look what they’ve done to you… The jailer is the key, kill him and you’ll be free. Fight your way free in this ultra-responsive, fast-paced sword fighting and dual-stick shooting game. Boss design by Takashi Okazaki. Original soundtrack by Carpenter Brut, Danger, The Toxic Avenger, Lorn, Scattle, Waveshaper and Kn1ght!