The PSP has come under fire for its lack of original games. But every once and a while a title comes along that helps silence the critics. Just look at Locoroco and Spyhon Filter for instance. The same thing goes for Killzone: Liberation. It belongs in the same family of top-tier portable games that argue in favor of high-powered handhelds.
Here's why: Liberation makes great use of the PSP hardware and its capabilities - all of them - to establish its place as one of the best games on the system. Even stripped of its technical achievements, Liberation is simply a very fun action game. It has the kind of accessibility required of a kickass portable title, to start. At the same time - and just as important - it offers the kind of depth missing from most PSP offerings. Liberation has its share of annoying quirks, but even these pale in comparison to the entertainment value evident in the rest of the package.
9/10