Any good RTS needs a decent AI. Anything with Halo in the title should have the absolute best, in my opinion. Take C&C, it has always had an AI ranging from OK to excellent, no wonder people around the world love it. But Halo Wars needs an AI that can trump it threefold. Intelligent, capable of learning, that's when it actually becomes intelligent.
"Didn't you hear? Spartans never die!"
Kurt-051, on the shield-world of Onyx.
"Tonight, we dine in hell!!"
Leonidas, the battle of Thermopylae