Sonic Adventure: Sonic 2k - Tails in Sand Hill Attack

Sonic Adventure: Sonic 2k - Tails in Sand Hill Attack is event data that could be downloaded to the player's VMU for use in Sonic Adventure. Meant to tie in with a real-world contest that was only available in the United States, it was only available from December 24, 1999 to January 7, 2000, and it adds a new mission for Tails. AT&T ads appear in Station Square in front of SS Central Station telling the player to head to Sand Hill. Once the Sub Game is started, the player must pass through the giant "START" plate to begin the challenge, at which point a three minute timer starts. In addition to Dreamcast/AT&T billboards being added to Sand Hill, ten specially-marked blue AT&T gates are added, and the player must pass through each of them. If all the blue gates are passed through, the player must pass through the giant "GOAL!" plate at the end of the course to record their time and save the game.