Sonic Team showcased "Sonic Adventure 2" with a trailer at E3 2000, and uploaded the trailer to its website on June 30. Sonic Team posted a trailer and a number of screenshots on May 30, 2001, with Sega promoting "Sonic Adventure 2" as the last "Sonic" game for the Dreamcast and as marking the series' 10th anniversary. Sega held a 10th-anniversary party for Sonic in June 2001, at which attendees could compete in a battle tournament; the winner played against Iizuka.