Sonic 1: Special Version  -  Build v. 2.0.

This is... a pretty interesting build.
At this point of the development, I was interested on changing the Sound Driver.
I was between the "Sonic 3 Z80" and (the brand new one at the time) "Mega PCM".
I was very undecided, so I thought:

Why not to build two different ROMs with different Sound Drivers?

by: "EditChris from 2013" (retarded)

And well, after fixing some bugs from the first release, I did... this: