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In page Mario no Photopi:

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On December 2, 1997, Mario no Photopi was preannounced with optional compatibility with the 64DD floppy drive[3] at a time when the drive was expected to launch in March 1998.[4] Compared to a SmartMedia card's then-typical 2MB,[5] the 64MB floppy disk was intended to hold a user's entire photo album and therefore further supplant the Japanese user's need to buy a less desirable personal computer and printer.[3] The 64DD's drastic launch delays forced the removal of all 64DD functionality from the game. From September 30 to October 3, 1998, the game was publicly demonstrated at Hagiwara Syscom's booth at World PC Expo '98.[2]