Instructions
PS3 Game List
Download a free copy of PS3 Game List (see References). Double-click on the zipped file to open it. Drag-and-drop the contents of the file into an empty folder.
Double-click on the extracted "Ps3 list" file to launch the program.
Click on the program's "Game Folder" button to locate the folder that contains your game. After the game loads into PS3 Game List, you can find the game's identification number beneath the program's ID heading.
PS3 Index
Navigate to Damox's homepage (see References).
Move your cursor up to the site's PS3 Games heading to select the region you'd like to search for your game title ID. For example, you can click on the "Europe" option for games from the European region. If you are unsure of your game's region, click "All."
Type your game's title into the index's Search box, then press the "Enter" key on your keyboard. Locate your game's title in the search results. The game's ID number will be located next to the title.
SonyIndex
Navigate to the SonyIndex website (see References).
Click on the "Name" option in the PS3 row of the appropriate region column. The region columns are "USA," "Europe" and "Asia."
Scroll down the page until your find the title for your game. The game's ID number will be located next to its title.