GamesRadar writes: "The first Killzone 2 review was leaked online a few days ago and, with the US Official Playstation Magazine rewarding it with a perfect 5/5, interest is obviously at a peak for the much hyped PS3 shooter. Until the review goes public we're guessing at what they've based that score on. But, from our time playing five levels of advanced preview code, we've listed the good things that we think have earned the game those full marks and even highlighted the bits that might see Killzone get a bit of a kicking in other reviews."