Their is a lot of crap going around the internet about this game formatting your memory stick, this isn't what actually happens.
what it actually does is start ok the first time you play it, but when you exit the game it deletes the "
Game" folder located at "
PSP/GAME" so when you try to browse your memory stick it tells you their are no games on it.
to fix this open the program called notepad on your pc (Found in accsessories) "click save as" (you dont write anything on the text document) the save the blank text document to "
PSP/GAME" on your PSP, do not choose a file name when you save it just save it as .txt
For those of you that didn't read this first, do not worry you do not have to format your memory stick, just go to the PSP folder on your Memory stick and create a new folder called "
GAME" , the missing files will reappear