This is a reversable poster given away for the 20th Anniversary of Sonic by GamesMaster magazine. It came with a supplimental booklet, stickers & pins. The poster is 2 sided, so you can flip it over for fresh art any time to change the look in your room/Sonic room. The first side has Sonic through the ages. Different stock arts from all the different games appear in chronological order (along with labels for what they're from) all over the poster. The other side is all Generations. It has the logo large in the middle, with CG graphics from Green Hill, and both Classic & Modern Sonics. Both sides are a great idea for a double side poster. This is a cool collectible.