No revenue estimate for GOG — its rating/review counts don't calibrate to sales the way Steam's do. The Steam version is estimated at $1.9M — a different platform, not this one.

Wizard of Legend

Wizard of Legend is a fast paced dungeon crawler with an emphasis on dynamic magical combat. Quick movement and even quicker use of spells will allow you to chain spells together to unleash devastating combinations against your enemies! Unlock over 100 unique spells and discover powerful spell combinations! A wide variety of elemental spells allows you to create a hand best suited to your play style. Dive head first into the fray or stand back and let your minions do the work for you. The choice is yours! Fast-paced, spell-slinging combat with solo and local co-op play Use powerful spell combinations to destroy your enemies! Procedurally generated levels mean a new challenge every time! Endless customization with hundreds of spells, relics, and outfits to unlock!