If you care about story, this version will disappoint. If you just want gameplay, you won’t mind.
The story of centers on Sonic attempting to restore the world after Dr. Eggman shatters it into pieces. Sonic Unleashed Psp Rom
While some PS2 games were ported to PSP, Sonic Unleashed was not one of them. Files claiming to be "PS2 to PSP conversions" of this game are generally non-functional or fake. If you care about story, this version will disappoint