I am looking to buy a psp but i thought researching before would be a good idea. I read the threads but i am new so didnt understand anything. 1. Can a psp play ripped/downloaded games without a modchip?. 2. What are the files that psp plays? (.iso .cso...) 3. If games can be played without a modchip, do all psp versions work? or is there some that dont 4. what do you play the games from, a memory card, usb flash drive, or mini dvd's? 5. Is it better off just to buy a modchip?