TOOSIN : 투신

The developers describe how their game uses AI generated content like this:

Generative AI was used to assist in creating certain in-game UI assets (such as combo icons), the main capsule (cover art), and for code debugging during the development process. All AI-assisted content has been manually reviewed, refined, and integrated by the developer to ensure a high-quality experience.

Required on Steam store pages since 2024. It covers content that ships in the game, on its store page or in its marketing — Valve does not require a disclosure for AI tools used during development, so this says nothing either way about how the game was made. Check it on Steam.