This competing factor offers mini-discs which are much more convenient to store than ordinary CDs. This means that the physical storage of games is more convenient (they take up less space on a shelf). They are easier to transport to a friend’s place since they fit neatly into an ordinary shirt or trouser pocket.
• At level 1, the discs are 1 cm smaller in diameter than a normal CD; at level 2, they are 2 cm smaller; at level 3, they are 4 cm smaller; at level 4, 5 cm smaller; at level 5, they have a diameter that is 6 cm smaller than a normal CD.