Team Bondi boss Brendan McNamara has said that LA Noire was originally going to feature more than three discs on Xbox 360.
Speaking to GameSpot, McNamara said that the number of discs was going to be at six unless it was massively compressed.
"We've always been called stupidly ambitious," he said. "Along with Rockstar, we make very big games.
"It took a lot of effort to get down to three discs - I think we were on four or five or six at one point - and to get it onto one Blu-ray [for PS3]. We're pretty pleased that we got it down to that in the end."
McNamara continued: "It's the biggest map that we've done and that Rockstar have done, so there's a lot of detail in there, and also a lot of actor's performances, 21 hours worth."
Rockstar confirmed a couple of weeks ago the 360 version would contain three discs in the game, with one Blu-ray for PS3. The publisher said that you'll only need to swap discs twice through the game during "natural breaks" in its story.
LA Noire launches today in the US. It releases here in the UK on Friday for PS3 and 360. Get a reviews round-up for it here.