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 $1.8K — a different platform, not this one.

Buccaneer

BUCCANEER is a 17th-century Caribbean 3D adventure that blends high-seas combat with resource management. Opt for combat-only, engage in ship-to-ship battles or lead crew boardings. Dive into the buccaneer world through campaigns. Plunder, negotiate, survive, and live to tell the tale! This swashbuckling adventure packs a real-time 3D punch! A 3D adventure game set in the 17th-century Caribbean, Buccaneer offers high-seas combat and elements of resource management. Choose a “cut-to-the-chase” combat-only option, fight ship-to-ship, or watch as your crew boards enemy vessels to take them over! Immerse yourself in the wide-open world of the buccaneers. by choosing the campaign option! To survive you’ll have to obtain bigger and better ships, keeping crews happy and loyal! Complete individual missions. Fight and negotiate your way through 21 territories in the Caribbean. Capture enemy ships. Plunder ports and towns. And live to tell it all! Game Features: Detailed campaign world includes 6 different storylines. Survive your career as a buccaneer and receive amnesty or a wealthy retirement. Real-time 3D ship-to-ship and ship-to-fort combat. Dynamic AI makes intelligent combat decisions.