Caramellia

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

We use generative AI tools to assist with: - Machine translation (MT) of interface and data text, reviewed before release. - Drafts of store page text and marketing materials. All content is reviewed by a human before publication.

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.