Need to find the SLUS# for a game fast? Try these handy sites:
U.S. Playstation game finder (PS1 & PS2)
(Replace the final part of the URL, starting after the equal sign, SLUS-xxxxx with the game of your choice. If you live in Europe, you will have SCESxxxxx, I'm looking for the link now)
Japan Playstation game finder (PS1 & PS2(?) )
Link directly to each game
(Replace the final part of the URL, starting after the slp, with an m or an s, then the game#. End it with a period (.), then html)
European Playstation
(This is a bit tricker...the URLs don't match by country or game code. Pick your country from the list and it will return a URL, but u still have to get the correct code.
How/why to use it?
If u want to properly label your release, or someone has sent u a game with only the SLUS/SLPS/SCES#
Akuma's link seems to list ALL games, whether PS1/PS2/PSP.... your choice.