Gran Turismo 5 Prologue is set to weigh in at 1870MB on PlayStation Network when it goes on sale next Thursday, 27th March.

That's how big the game was when we downloaded it to put together our exclusive review of the PAL version, and Sony has confirmed to Eurogamer that it will be the same when the game goes live on the PlayStation 3 Store.

1.9GB isn't exactly huge, especially given that PS3 games can take advantage of Blu-ray's 50GB if they choose, so how do they do that?

One way Prologue reduces its footprint is by leaving cinematics on the server until you choose to download them from GT TV. You can choose to download the opening movie at any time, and when you finish Event series you're told that you can now download the end movie from the in-game high-definition TV download page.

According to a Sony spokesperson, both movies will be included on the Blu-ray disc version of the game