SEGA has slowly been showing off the different Sonic Generations play areas as they work their way through the last 20 years of levels from Sonic games. The trailer below is for the 1998-2001 Dreamcast years, showing off levels such as City Escape, Seaside Hill and Speed Highway. In addition, any good loving Sonic fan will be thrilled to catch a glimpse of Shadow near the end. Sonic Generations is slated to hit the Xbox 360, 3DS and PS3 on November 1st 2011.