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 $68.6K — a different platform, not this one.

Ikarus Parkour

An immersive precision 3D platformer set within a deadly game show, hosted by the Elites for their twisted entertainment. Contestants, who voluntarily sign up, are transported to an 850-meter vertical tower, buried deep underground in an unknown location.       Hard Mode - no checkpoints and a speedrun timer Casual Mode - frequent checkpoints and no timer.       Reach the top to win a life-changing sum of money and your freedom. However, the stakes are as high as the tower itself—fall, and it’s the end. Every leap and maneuver is a matter of life and death. Can you survive the tower of Ikarus and escape?       Explore the tower's deadly beauty, an immense structure, split into four distinct levels, each with its own unique aesthetic, new obstacles and increased difficulty.