When Killzone: Shadow Fall was unveiled at the PlayStation 4 event in February, it was a bit surprising that the sequel eschewed the number 4 in favor of a subtitle. Developer Guerrilla Games said it had to do with a new setting and new console generation.

"I think for context I like 1, 2 and 3, personally," the studio's managing director Herman Hulst told Edge, "but with Shadow Fall, it's a new platform. It is, in a way, a new start for the franchise with the new look and the new style of player character. I think the name now, as a Shadow Marshall operating in these shadows that are cast by this wall that's separating the two factions... it just felt right to call it that."

The game takes place 30 years after the end of Killzone 3, with Vektans and Helghans living side by side in Vekta City. However, reminiscent of Earth's Cold War and the post-WWII Berlin, the city and people are divided by a large wall. "It looks different, our take on how we wanted to progress the franchise going into PS4 and also the player's character. You're now playing as a Shadow Marshall, part soldier, part spy. We wanted to really set the player up to now take on the powerful enemy properly," technical director Michiel Van Der Leeuw said.

Not much has been said about the game since the reveal, so here's another look at the impressive trailer: