There are more PSP FPSes like Coded Arm 1 and 2 neither are that great though... just saying.
I agree with Naz. I've had both and in the year before the PS3 and Wii came out I was a fiend when it came to handheld games. I had both and I loved them. The PSP has a great and underappreciated library but the DS simply outclasses it. Have yet to replace my DS though but I had fun with the last two games I played through (Phoenix Wright and FFCC).
IMO the PSP does look better though.
http://www.youtube.com/watch?v=F1gWECYYOSo
Please Watch/Share this video so it gets shown in Hollywood.







