I first read about this on Kotaku.

http://kotaku.com/5670258/did-sonic-fan ... edgehog-hd
http://www.sonicretro.org/2010/10/sonic ... -download/
http://sonicfanremix.com/

For those who are lazy, here's a couple of videos on those sites:

A short trailer sort of video, a montage of the levels:


Watch this video on Youtube.

This one is a playthrough of all the demo levels I believe, from the menu to the end (no boss fight it seems, sadly).

Watch this video on Youtube.


I'm just downloading this right now. However the person doing the music has done some awesome orchestral recreations of this music before, it's all on youtube.


EDIT: I recommend grabbing it from Megaupload here: http://www.megaupload.com/?d=08TWJPYC

I was mid-way downloading it from another source very slowly when said source seemed to die. There's a lot of people downloading this it would seem.

EDIT2:

Well I like it! It does look REALLY nice, and for me it felt like it played nicely too. Had some issues with the controls initially because my Joystick was plugged in and I hadn't realised.

This looks truly incredible

It's not bad, though I did finish it quicker than I downloaded it lol

Finished faster than I downloaded just like Si.

F*cking awesome graphics. F*cking awesome classic gameplay. F*cking awesome music. F*cking awesome references (ROBOWALKER, ROBOTNIK LAND).

10000000000/10

Pretty much what Sonic 4 should have been.

Looks sweet Hope Sega endorse it

Endorse it? Pray they don't try to close it down first.

I am not attracted to the graphics in any way whatsoever, it's like jazz jackrabbit HD, not sonic.

Regardless, it was pretty fun.