"They are not actually very intelligent in most senses of the word, but they seem to be very natural and convincing enemies in-game. Rather than trying to approximate real intelligence, Bungie aimed for expressiveness, smooth gameplay, and a decent illusion of intelligence. The newer games often feature substantially more sophisticated AI systems, but are often not perceived as having smarter, more natural, more convincing enemies." Exactly. Thank you. Nobody's matched what Bungie did (with such basic material) so far. IMO. Am glad I'm not alone here. That's all I was looking for...