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 $2.7M — a different platform, not this one.

Atlas Fallen: Reign Of Sand

In solo or co-op, experience Reign of Sand, the ultimate version of Atlas Fallen. Ride the sands of a timeless land and defeat legendary monsters in spectacular Action-RPG combat using devastating powers. Master the sand to manifest devastating weapons and harvest the essence of your enemies to customize your own play style. Open a new era for humanity in a narrative campaign playable solo or in cooperation with a friend. Break your chains. Unleash the storm! An expanded world, new enemies, revamped progression, new quests... The world of Atlas Fallen is enriched by this major, entirely free update! Enjoy new voice acting, a reworked campaign and face even more formidable creatures armed with new Essence Stones. Persevere in your adventure with the long-awaited "New Game " and challenge the gods with the nightmarish difficulty mode. Many more surprises and improvements await you in this content-rich new version! Surf the dunes of this desolate world to unravel its mysteries and free your people from oppression. It's the perfect time to start your adventure thanks to a revamped progression and a narrative campaign with reworked voice acting. With a new Nightmare mode available in New Game , being two won't be too much to fight the Gods. Take on the new challenges of Thelos and face unprecedented legendary monsters with unique abilities. Unleash the power of your gauntlet, forge your legend with a fluid, dynamic, and completely customizable combat system. Reign of Sand completes your arsenal with Essence Stones and armors infused by unprecedented effects.