A review done by the Japanese site Pocket News has revealed that the upcoming Final Fantasy XIII demo, packaged with the CG film- Advent Children, will take up a whopping 5.09 GB’s of data. That is an astronomically high number for a demo.

With this in mind, especially seeing how the demo is cited as being an hour long, the game will definitely take full use of a 50GB Dual Layer Blu-Ray.

Via Joystiq