Top 5 Underrated PlayStation Portable Games

For those of you not yet familiar with the Unsung Heroes series, the rules are as follows; games eligible are those UMD-based releases that Electronic Theatre feels have been underrated, or treated unfairly since launch. And for the Multi-Region PlayStation Portable (along with every other system) we're keeping it based strictly on titles that have seen UK launch. Below are five top choices for the format that you may well have missed, and would be wise to look at again...