I tell you, I'm not into forcing religion on anyone, and I'm not really Christian, but the game looks alright. Not much different than Command & Conquer by the looks of it. It will live and die on whether it's a worthwhile game or not. http://www.leftbehindgames.com/pages/faq.htm
The PSP always seemed like a pretty solid system, especially as a portable media center. Music and movies on a pretty good-sized screen, and there are some pretty solid games out for it (and more coming, like the portable God of War).