Would need a good definition for what is an "AI" game. Maybe 3-5 tags saying how much it was used in the development.

Did the devs use LLM coding tools with proper human reviewed code?
Did the devs use LLM generated artwork?
Did the devs just type "make a copy of this game" and post what got spit out?

First option is going to be in the bulk of games made going forward. Second will probably be in a lot of games. Third should just be banned outright.

edit: If it's just a "was AI used in the creation of this game" then everything is going to have an AI tag. It'll be like California's Prop 65 where the tag means nothing cause everything has it.