A pair of Sonic Generations gameplay videos have appeared online, and we think it's fair to say we're now officially Sonic cycled. You've got us Sega - now go on and play with our emotions.
In case you missed the debut teaser trailer, the 20th anniversary game will have both classic Sonic and the modern-day, green-eyed equivalent revisiting classic Sonic levels - in both 3D and 2D side-scrolling.
Below you can see the Green Hill zone in action in both classic and modern forms.
You can read more details on the game in our debut Sonic Generations preview.