Man, this one's a bit niche and my memory is hazy because I've seen more 'inspired by' than direct adaptations. I'm assuming you mean the webtoon 'My Wife is a Demon'? Or maybe 'My Wife is Actually the Emperor'? The wife-character archetype from those romance-fantasy webtoons is everywhere in otome and gacha games now—the powerful, often misunderstood female lead who starts off weak or hidden. 'Tears of Themis' has some card art and storylines that feel pulled straight from that vibe, especially the 'Nostalgic Melody' event with its hidden noble lady angle. 'Love and Deepspace' kind of flips it, making the male leads the ones with secretive, powerful backgrounds while the player character is the competent one, which is a fun twist on the trope.
Honestly, the biggest overlap I notice is in the Chinese mobile RPG 'Mr Love: Queen's Choice' (the original Chinese version more than the global). The whole premise of evolving from a struggling producer to being connected to these immensely powerful, supernaturally-tinged men feels like the interactive version of a wife-webtoon plot, just from the perspective of the 'wife' character. The art style, the melodrama, the hidden pasts—it's all there. I'd be lying if I said I didn't download a few games just because the promotional art looked like a scene from 'Something About Us' or 'See You in My 19th Life'.
It's less about a one-to-one adaptation and more about that specific cocktail of fantasy, modern setting, romance, and a protagonist discovering a world of power and danger through their connection to a love interest. You find it in the narrative DNA of so many story-driven mobile games now.