| Sonic Adventure Release Celebration Event | |
| On December 23, the release date of Sonic Adventure, producer Yuji Naka as well as Sonic and his friends came to support the game at retailers in Shinjuku, Ikebukuro, and Akihabara. Thanks to all the stores, it was a great success! He was the first one to get to Shinjuku, and he lined up from five in the morning. | |
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| SONIC TEAM 1998 | |