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 $150.1K — a different platform, not this one.

SteamWorld Quest: Hand of Gilgamech

Triumph over evil with the hand you’re dealt! SteamWorld Quest is the roleplaying card game you’ve been waiting for! Lead a party of aspiring heroes through a beautifully hand-drawn world and intense battles using only your wits and a handful of cards. Take on whatever threat comes your way by crafting your own deck choosing from over 100 unique punch-cards! What awaits you is a luscious treasure chest filled with gold, dragons, vivid worlds, magic, knights in shining armor as well as XP, turn-based battles and all that good RPG stuff! The game’s humorous mix of traditional fantasy and steampunk robots makes for an unforgettable experience with lots of laughs.