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 $50K — a different platform, not this one.

Parkan 2

Parkan II is an original concept game that will allow you to feel as a pilot of a spacecraft lost somewhere in the universe. The players are to explore hundreds of solar systems, take part in a series of fierce battles and meet a new enemy - a mysterious creature calling itself Gegemaunt. Become a pirate or mercenary, get money to buy the most powerful cruiser and show them all who is to be the new master of the galaxy. Unforgettable adventures in the Parkan II universe await you! Key features: Explore the awe-inspiring galaxy which evolves as you progress Unique mix of several genres: action, RPG, strategy and space simulator Huge game universe: more than 500 solar systems available for exploration The player can choose any type of gameplay strategy, become a colonizer, pirate, trader or mercenary Multiple diverse ways to modernize the spacecraft and battle suit Wide freedom of action: battle in space and board enemy ships, explore planets, capture enemy bases and conquer solar system