You're looking for information on the "Sonic Unleashed ISO" feature. Here's what I found:
Sonic Unleashed is a 2008 platformer video game developed by Traveller's Tales and published by Sega. The game was initially released for the PlayStation 3, Xbox 360, and Wii consoles. sonic unleashed iso
The "ISO" feature likely refers to the game's ability to run at a higher frame rate and resolution when played from an ISO image, which is a disc image file format. You're looking for information on the "Sonic Unleashed