Sonic Generations available to pre-order in the USA, UK and Mexico

Sonic Generations is now available to pre-order in the UK (at Game), USA (at GameStop) and Mexico (for 99 pesos ($7.95) at 2 mexican video-game stores).

The game will be released in North America on 1 November 2011 and Europe and Australia, in the same month. However we don't know the comfirm date for Japan, yet!