Sudden Attack Zero Point

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

Generative AI was used only during the early stages of development to assist with creating initial art concepts and exploring visual directions. Final in-game art assets were created and refined by our development team.

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.