SEGA's Announced A Sonic Generations Demo For PS3.

The demo will allow players to experience the first act, Green Hill Zone, as classic Sonic, and will even support 3D televisions.

You'll need to be quick though, as the demo will only be available until July 12th. After that, it will disappear from the PlayStation Store for good. Downloaded versions of the demo will also expire once the date passes, so you'll not be able to play the game even if it's saved onto your system.

Sonic Generations looks absolutely amazing, so we can't wait to see if it lives up to its potential. The demo will be available from the PlayStation Store tomorrow.