Sonic Adventure 2

 is a platform game developed by Sonic Team USA and published by Sega on June, 18 2001 for the Sega Dreamcast. The game was later ported on the Nintendo GameCube as Sonic Adventure 2: Battle.

Many DLCs for this game were released through the SegaNet service for the VMU.

How to obtain
See Transfer Saves Between Dreamcast and PC.