The original Killzone never quite fulfilled its promise as Sony's "Halo killer", but the second game has already become the PlayStation 3's definitive first person shooter. Renowned for its graphics from the first moment it was previewed, there's a lot more to this game than just state-of-the-art visuals. With a more realistic, gritty feel than other Sci-Fi shooters, this is more like a World War II game in space. Most weapons are very similar to modern day armaments and there's a constant emphasis on finding and using cover. Although the single player campaign is impressively large and varied the game's longevity comes from the multiplayer. The new class-based game modes means everyone gets to pick a different role according to how they prefer to play, with clans of players teaming up to take on their rivals. The end result is a game that's very different to Halo - but just as good in its own right.