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

Geneforge 1 - Mutagen

Unique, open-ended fantasy RPG in an alien land. Use battle or cunning to change the world, served by your army of custom-made mutant monsters. Tons of skills, treasures, factions, treasures, and creations. Unmatched freedom and replayability in an epic story.