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 $34.2K — a different platform, not this one.

Silver

Silver, a corrupt and sinister sorcerer, rules the land of Jarrah with an iron fist. He and his henchmen have abducted the village women as part of a pact with the almighty god, Apocalypse. Now, only one man can put a stop to Silver and his minions. That man is you, David, a promising young knight whose wife is among the captured. In order to succeed you'll need to recruit allies, master your swordplay, learn the art of magic, and venture through hostile worlds teeming with Silver's corrupt followers to find 8 lost artifacts. Begin your quest, and become a hero! Silver is the European answer to JRPGs, which were very popular at the time. With eye-candy in the form of pre-rendered 2D backgrounds, manga-inspired character design, and console-style gameplay, it introduced PC gamers to a new genre. This game is very unique on PC as there are only a few such titles on this platform, so if you feel like trying a different approach to role-playing, then this is a title for you! Form your party from a cast of interesting and diverse characters, each with their own unique traits. Gripping story and polished gameplay combine to make a “simple” RPG that’s still a lot of fun. Unique combat system with real-time, fast-paced action--you assume direct control over one of the characters, and the rest of your team fights on their own.