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 $2.3M — a different platform, not this one.

Devil Daggers

Inspired by 1990s FPS and arcade games, Devil Daggers is a fast-paced shooter that places you in an abyssal arena to face endless legions of progressively more dreadful demons. Master simple but deep mechanics and fight to survive as long as you can. Challenge your high score or compete for precious seconds with friends or on the global leaderboards. Your spirit and your skills will be tested. Your limits will be broken. Gameplay Features: Face 13 horrifying enemies and a colossal boss. Mechanics that are simple to learn, but challenging to master! Learn to circle strafe, bunny hop, dagger jump or master advanced techniques for speed boosts and double jumps. Harvest crystals to increase the power of your daggers, earn powerful homing daggers. Beat your best time, climb the leaderboards*, compete against friends or the world. Learn techniques and strategy from anyone using the replay system. Technical Features: Sorath's custom built game engine married with lovingly hand crafted art and sound. 1990s software-style rendering with unfiltered textures and polygon jitter. HDR 3d positional audio. Optional "HRTF" binaural audio. 3d particle physics system with procedural decal effects. Supports hundreds of flocking enemies that all avoid each other. Replay system allows you view replays from every score on the leaderboards*. Control replays; fast forward, slow down or switch to a bird's eye view. *Access to leaderboards and replay features require Internet access the creation of a user login.