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 $25.7K — a different platform, not this one.

Vambrace: Dungeon Monarch

Step into the role of a Dungeon Monarch, a chosen guardian of your master's dungeon. Equipped with formidable magic and an inexhaustible army of summonable troops that synergize with one another, your mission is to repel adventurers, envious rivals, and other deities seeking to invade and raze the dungeon.      DEADLY DECK BUILDING TACTICS Vambrace: Dungeon Monarch features a unique, fast-paced combination of deck builder, tactics, auto-battler, and dungeon defense gameplay!    Utilize your strategic deck of cards to unleash devastating magic spells and summon formidable combat units onto the battlefield. Annihilate your foes with lightning bolts, fireballs, and barrages of arrows while buffing your troops with bonus damage, morale boosts, and protective armor. Observe as your units join the battle, decimating intruders with their unique abilities.      Archon hunters from around the world invade your god's lair to seek her golden throne, aiming to take advantage of the master's lapses in power. But this dungeon has a new leader: the Monarch, the god's regent. But is this new one worthy of his position and power?      Armed with a magical deck of cards, each representing your abilities, you summon and support units as they wreak havoc on enemies. You can only carry so many cards, so you’ll need to come up with a sound strategy that makes the most of the cards you have and customize your deck to deal with a variety of foes bent on looting and destroying your dungeon.        A unique combination of deck building, dungeon defense, tactics, and auto-battling Cards and units can synergize to increase their powers. Tactically plan to make the most of these synergies and send your enemies packing! Once on the battlefield, your units will attack on their own, but as their leader, you can move around the dungeon to make the most of their ferocious fighting abilities! Construct towers and other buildings to speed troop summoning and unlock additional features A fun, fresh, and fiendish art style Random events boost the game’s replay value