NZGamer writes: "Unfulfilled potential. Doesn't it suck? The original Killzone, released in 2004 for the PS2, left many PlayStation owners feeling gypped. There was, naturally, the fanatical (and wistful) desire to have PlayStation's answer to Halo, and Killzone, as an exclusive FPS title, promised to be a real challenger to Microsoft's behemoth. It was unfortunate then, that although the game was generally solid, Killzone lacked Halo's imaginative X-factor, floundered on a generally neglected online network, and was plagued by glitches that put the capabilities of the PS2 as its console of choice into question".