I wonder what definition of AI they're using? If you go by the definition in some textbooks (e.g., the definition given in the widely used Russell and Norvig text), basically any code with branches in it counts as AI, and thus nearly any game with any procedurally generated content would run afoul of this AI art rule.
AI is a moving goalpost. At least now the moving goalpost is call AGI.
A bunch of 'if' is an "expert system", but I'm old enough to remember when that was groundbreaking AI.
Their FAQ only states:
> Games developed using generative AI are strictly ineligible for nomination.
I haven't found anything more detailed than that; I'm not sure if anything more detailed actually exists, or needs to.