Interesting, I didn’t know that. I suspect many casual observers don’t either. So you’re suggesting they did this work with proprietary info they’d gained through work with Sega and thus broke their NDA?
Not necessarily -- a lot of external hobbyist work has gone into reverse-engineering Sonic Generations, which has an official PC port and is based on the same engine as Unleashed.
Funnily enough, one of the most famous Generations mods is a project that ports over a bunch of levels from Unleashed. IIRC they changes the graphics pipeline to look and work more like the Unleashed one, too.
Funnily enough, one of the most famous Generations mods is a project that ports over a bunch of levels from Unleashed. IIRC they changes the graphics pipeline to look and work more like the Unleashed one, too.