Still, there is Serment (which I have not ruled out looking into buying at some point), which is surely also a niche game if not outright more niche.
I wasn't familiar with Serment, so I looked it up. From the GoG product page: "Serment - Contract with a Devil (or Serment, for short) is a visual novel
- dungeon crawler hybrid where you play as a girl who was revived by a beautiful devil."
Like it or not, I think the answer is there in bold. ;)
I guess while technically Serment does seem to have a dungeon crawler component, it seems to be targeting the larger JRPG/VN crowd, and ties in with GoG's recent push towards those markets.
Vs. what (even as a fan of them) I'd have to agree is a bit more niche in terms of either Wizardry/M&M derivatives (The Quest, Grimoire) or more streamlined/modern Grimrock knock-offs (Ruzar, Fall of the Dungeon Guardians).
Will that pay off for them/Is it a wise business strategy? IDK. But it seems fairly consistent to me.
lol - here are the game's "features":
Game features: Cute anime girls!
4 playable main characters, each with their own unique story and endings.
More than 10 side characters, each with their own personalities and subplots.
A dungeon crawler with manually designed puzzles and 100+ unique items to discover! A lot of cute anime girls!
Turn-based RPG battles with simple mechanics but tons of depth. A detailed dating sim time management system.
Cooking, crafting and fishing minigames! Light yuri (GxG) romance.
Did we mention that there will be cute anime girls?
Yeah, no disrespect, but that's not the same genre <at all> as Grimoire.