Because of the recent Lost World port to Steam and PC, a lot of people are not curious on the possibility of a Colours and Unleashed/World Adventure port. Because of this, this petition was created to help Sega see how much interest there is in a port of these two games.

Because of the huge modding community for Sonic Generations, with mods like the Unleashed Project and multiple ports of stages from Colours, it should be pretty evident that there's a lot of interest for ports of these games, despite what sale records may suggest.

Sonic Generations - Unleashed Project - Release Trailer

Sonic Generations - Tropical Resort All in One Remastered - Release Trailer

Many fans, myself included, would love to see Colours and Unleashed to be ported to PC in HD, 1080p 60fps. Considering how beautiful Sonic Unleashed looked on the Xbox 360 and PS3, the graphics would be glorious on PC!

Maybe if Lost World sells well, and get good reviews, then Sega could consider porting previous Sonic games to Steam also.