The developer behind hotly anticipated stealth game Assassin's Creed has revealed details of its struggle to make the game as good on the PS3 as it is on the 360.

The game's creative director, Patrice Desilets, told Pro-G in an interview that one of the biggest challenges the team is currently facing is fitting everything into a 360 DVD disc compared with Sony's Blu-ray format. Conversely, he revealed that the team was "really struggling right now on PS3" because of memory problems specific to Sony's console.

He added that the developer, Ubisoft Montreal, had drafted in help from both Microsoft and Sony to make sure the game has "the same quality on both systems".

"The PS3 version is as good as the 360 version. We've been showing the PS3 version at E3 this year, but we've done a lot of events and it's just easier for us and for people from the press to have a 360. But the versions are the same, basically," he said.

He added: "Both have their own challenges. Right now we have a big challenge on the 360 to make it fit on a DVD, to put five languages, to put all the data on eight gigs. On the Blu-ray side we're really good, but then the memory is quite different. How we handle memory is really different between the two machines and we're struggling right now on the PS3. But we have people who are really dedicated and we're having help from Microsoft on one side and Sony on the other side to have the same quality on both systems. It really depends on the week basically as to who's best."

Owners of the PS3 will find comfort in the comments, having suffered some poor quality ports of 360 games since Sony released the console in March this year.

You can check out the entire video interview with Patrice next week, where he talks about the possibility of using Assassin's Creed's technology in other games and why the PS3 version will not make use of the Sixaxis controller's motion technology. If that's not enough for you, you can check out our hands-on preview of the game later today.