Soul Calibur 3, curently trying to beat Survival mode, on Hard. It's a scary sort of fun to do it with Nightmare using Soul Edge (with which you continuously lose health, but regain it when you damage your enemy). I'm also having fun using the random character generation system, and watching the freaks of nature it generates go against each other in AI mode.
Devil Kings. The atmosphere is great fun, but it's not very well implemented in the AI. The enemy soldiers seem as dumb as dirt, and strangely averse to actually attacking. Not very satisfactory.
Beyond Good & Evil. Progress is slow, but I'm interested enough in the plot to keep me going with this. Currently starting the Slaughterhouse mission.