The latest user-generated triumph is the Unleashed Project , a massive port of some of the daytime (read: good) levels from the console-only Sonic Unleashed.

RPS reports that the Sonic Generations - Unleashed Project includes most of the day stages from Sonic Unleashed, has improved controls and runs at a smooth 60FPS.

This unofficial project ports most of Sonic Unleashed's daytime levels from the Xbox 360 version into Sonic Generations on PC. It also includes any improvements that are deemed as necessary to ...

Remember to check out the huge Unleashed Project mod once you're done, which adds in the best levels from the not-on-PC Sonic Unleashed.