F.E.A.R. 2 has the best AI that I can think of. Wonder if it counts as high tech or they just squeezed a lot of juice out of basic techniques
F.E.A.R 2 was released on the PS3 and Xbox 360, both of which have laughably low specs by modern standards. When you have to create dynamic experiences out of a potato you are forced to get creative and that involves squeezing a lot of juice out of basic techniques.
Transformer based AI had to wait until the world's compute capacity reached a certain level to become feasible.
You’re in luck, they made a great paper on this!
https://www.gamedevs.org/uploads/three-states-plan-ai-of-fea...