After courting controversy with its "live" Killzone 2 demonstration at E3 2005, Guerilla was determined that its first PlayStation 4 showing would be the genuine article.
"That was one thing where we went ‘Okay, next time around we’re going to be on a stage we’re going to make sure it’s real,'" Guerrilla co-founder Hermen Hulst told Edge.
"We actually made a point of not even claiming it was real, it was as a matter of course that it was real,' technical director Michiel Van Der Leeuw added.
"I think everybody was onboard with that, there was so much drive for people to make things real. We were working with central in London and the guys in Japan, fixing the firmware to make sure that the Facebook upload would work. It doesn’t get much more real than that."
Guerilla didn't even bring a back up video of a playthrough in case something went wrong on the day and the live demonstration failed - something which was quite possible.
"We fixed three bugs in the last day that were very, very rare and only happened like once in a hundred playthroughs, but we knew that three of those bugs were in there. So theoretically, there was like a three in a hundred chance of a crash," Van Der Leeuw said.
"I was very nervous seeing Stephen playing on stage and a lot of coders here in the Amsterdam office watching live-stream were also really, really nervous. But we made it through."
Killzone: Shadow Fall was demonstrated live on stage at the February PlayStation Meeting and looked pretty marvellous. We expect the new console during the 2013 holiday period.