Comment by magicalhippo

Lots of games use AI for their opponents. One example I recall fondly is F.E.A.R. which used[1] Goal Oriented Action Planning for enemies.

It was the first first-person shooter I played where the enemies actually were tactically challenging. Sit and camp a spot and they'd find a way to flank you.

So, I suspect you mean something particular when you say AI. What are you thinking of?

[1]: https://www.gamedeveloper.com/design/building-the-ai-of-f-e-...