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 $4.9K — a different platform, not this one.

Dragon Wars

The designers of the Bard's Tale series, Wasteland and Battle Chess pooled their talents to create the ultimate role-playing fantasy. The result was Dragon Wars. Sailing across uncharted seas, you and your party are in search of a legendary paradise called Dilmun - a place where the streets are paved with gold and no one wants for anything. However, King Drake of Phoebus has declared all magic illegal - magickers have been slain or fled into exile. In retaliation, enemy islands have threatened to unleash their guardian dragons, the most destructive force in the world. While docked at a harbor in Dilmun, you are arrested on suspicion of spellcasting. Imprisoned and stripped of everything but your wits, you are sentenced to life in a cesspool called Purgatory. Magic is your only salvation - a worldly possession in a world possessed. Over 60 monsters and 65 spells. A unique combat system: choose complexity of combat resolution, determine spell strength, select tactics of ranged combat. A paragraph book to enhance storytelling.