Sega set November 18 as the release date for Sonic Colors in Japan. Reserve the game there and you’ll get a trading card to use Sonic in The Great Historical War: Gettenka. This card battling arcade game takes place in the Sengoku or Warring States period.
So, imagine this game with Sonic in it.
Neat, but I think the Sonic hat Sega has for North America is a better pre-order bonus.