Oro Cade

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

Generative AI tools were used during development to generate background audio tracks, select visual assets, and promotional store page art. All assets were reviewed prior to release. No content is generated in real-time during gameplay.

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.