From Joystiq.com: "Remember the days when games had to fit on a few 1.4MB floppies or they were physically impractical? The extent to which those days are long gone was put into stark relief by a recent Eurogamer interview in which Sony worldwide studio head Phil Harrison said that some PS3 games were already nearing the 25GB capacity of current Blu-ray discs. In the same interview, Harrison said he expected PS3 games to fill newer 50GB-capacity discs by the end of next year. It's enough to make us wonder -- what's going in to all that space, and what are we as gamers getting out of it?
Historically, storage capacity has been an important factor in game design. Adding more space to early arcade, PC and console games meant adding more floppy discs or RAM chips, increasing the cost of production and reducing profit margins. This forced game designers to be resourceful, making the best of what they had with innovative graphical and programming tricks."