Killzone 2 to feature four-player co-op campaign?

A recent hands on preview posted by PlayStation World UK editor Ian Dean has hinted that Guerilla Games' upcoming shooter Killzone 2 will feature four-player campaign co-op.

The company has already confirmed that a post-launch patch will add co-op play to Killzone 2, though it was unclear as to how many players would be supported and whether it would be offline or online only.

"And then there's the four-player co-op campaign to look forward to. Now that really could be something special," wrote Dean.