Killzone: Shadow Fall's digital download is "cracking on" to be a whopping 50GB file, Sony has revealed.

Discussing the "bloody big" download with Eurogamer, Sony UK MD Fergal Gara explained that the platform holder hopes to alleviate the frustration associated with downloading big files with PlayStation 4's Play as you Download functionality, a new technology that lets players start playing the title after just a short amount of data has download.

"The Play as you Download functionality, for example, means you don't need the whole file before you go," said Gara. "This is a little bit counterbalanced by the fact the files themselves are getting bloody big. Killzone: Shadow Fall is an uber file - I think it's cracking on for 50GB. It looks it, too, when you see it."

The file is significantly bigger than current-gen titles. GTA 5, for example, expected to be one of the bigger games on current-gen consoles, was a huge 18GB file on PlayStation 3.

Gara admits, however, that digital downloads are "still a relatively tedious process," and that Sony has "done a lot of work on pre-delivering files. It's not perfect. It's not seamless. The file version of the game versus the disc version of the game maybe needs to go through additional QA and additional testing," he says.

"Some of the problems that have occurred have occurred on older machines, which of course when you go into the next-generation you at least get to reset and start again and everything's the same age and new. That helps."

Killzone: Shadow Fall's download will also be split into single and multiplayer chunks, allowing players to prioritise which portion they want to download first.

Sony was criticised for the way it handled GTA 5's preload event earlier this month after files from the game leaked online. Multiple users also suffered major installation issues following the game's launch.

However, Gara says that PSN is "a major area of focus. It's a major area of investment. The network will perform better on multiple levels, because it becomes not just a sales or gaming delivery but increasingly it becomes a social network. So it's got to be a compelling experience on multiple levels. It's going to be for no lack of investment, for no lack of effort and no lack of intention that things might fall a bit short. But we're definitely moving in the right direction, and I'm confident when step on and understand its importance."

PlayStation 4 launches on November 29. Two official PS4 bundles containing a Blu-ray Disc copy of Killzone: Shadow Fall will also be available at launch.