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 $10.5K — a different platform, not this one.

Planetary Dustoff

Planetary Dustoff is a space-themed roguelite shooter. Go on a death riddled journey to sprawling alien environments and fight your way through hordes of enemies and epic boss battles. Take part in the revived Planetary Survey Program aboard the Space Station and help the Space Faction find a new home for humanity. Expand your Space Station with helpful allies and recover suits with special powers to choose from. Explore unique environments and delve into over a 100 different weapons and items! - Unlock and choose from four different different suits, including a syringe gun equipped Space Doctor Suit and a sword wielding Space Knight Suit. - Find and choose from over 100 different weapons and items, from flamethrowers, giant hammers and crossbows to pets and deployable turrets. - Fight your way through three unique, procedurally generated, planets, fight their stubborn inhabitants and uncover their secrets. - Rescue helpful allies and unlock special decorations to expand your Space Station with. - Expand Planetary Dustoff with your own and the community's creations using the built-in Lua scripting support. - Enjoy the entrancing, 45 minute long, original soundtrack in its uncompressed format.