Ok, it's been a long time between drinks... but the Retro-Sonic website has finally been updated/redesigned with new info and screens
http://rsonic.randomsonicnet.org
Big News? Retro-Sonic's engine is pretty close to completion, I've finally started doing the levels again... and Retro-Sonic has been successfully ported to Dreamcast! Not only that, but a LOT of the hype/excitement surrounding ProSonic exists right here, right now in Retro-Sonic (namely, scriptable objects/gameplay, Megadrive Style Gameplay, Level Importing and Parallax Effects with enhancements)
So yeah... have a look and tell me what you think
EDIT:
P.P.S. Here's the Dreamcast Proof of Concept Build!! It's not perfect, but it's quite groovy, the levels are ordered in terms of completion... so expect the gameplay to get very beta-esque as you go on lol
Here's the Link (Thanks Damizean Again! )
It's a Self Booting Nero Image, so burn and play