MARODIS2

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

Generative AI was used to create certain visual assets, including 2D illustrations, the game logo, Steam capsule images, library artwork, and achievement icons. Generative AI was also used as a development assistant for portions of the source code. All AI-generated content was reviewed and, where appropriate, modified by the developer before being incorporated into the game. The game's design, gameplay, and final implementation were created and completed by the developer.

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.