I have some PSP and PS1 games I'd like to share that are missing from the database, here they are, using the format found in the wiki:
SLES-00845 Blaze & Blade - Eternal Quest [E]
ULES-01513 3rd Birthday, The (Europe)
ULES-00267 Ys - The Ark of Napishtim (Europe)
ULES-01278 Prinny - Can I Really Be the Hero (Europe)
ULES-01521 Final Fantasy IV - Complete Collection (Europe)
As you can see, they are mostly PAL JRPGs. Not a lot of them, but I think they can be useful and I want to contribute with something.