Sega’s been showing a lot of love to PC owners as of late with releases of Sonic Generations, Sonic 4: Episode 1 and Sonic CD to the platform. But what of Sonic Unleashed, the game which kicked off Modern Sonic’s current breakneck speed style (and included the highly divisive Werehog)? If anything, those Unleashed stages may soon be making their way as a patch to the PC version of the game.

Forum members Dario FF, Twilightzoney and Chimera have been hard at work trying to bring Unleashed‘s stages over to Generations’ engine. In one week, they went from bringing in the stages without any sort of collision and usage of Global Illumination Ambiance (GIA), the system used in both Unleashed and Generations to give some dynamic lighting to the levels, to the above video. So far, Windmill Isle Act 2, Dragon Road Act 1 and Cool Edge Act 1 have all made a partial conversion. The group admits that while progress is going well, there is still much work to be done.

“Well shadows ARE casting on stuff like Sonic or the objects. It’s there, it just isn’t casting on the terrain for some reason(and it’s not some Terrain -> Terrain thing, Sonic and the objects don’t),” Dario FF said with regards to missing shadow effects. “The only technical explanation we got is, we don’t effing know. But hey, a week ago I wouldn’t even have dreamed of seeing GIA data correctly working, let alone the high-quality DLC one.”

For comparison, check out this run of Windmill Island Act 2.

For more on the progress of their work, check out this topic. If you can’t see it, here’s a lovely gallery of photos of their work so far.