Sonic 1: Special Version  -  Build v. 4.0.

Ok, this is gonna be huge...
After the release of... THAT thing called "v. 3.0.", they were two users that wanted to help me
to improve my content. They were: "SonicVaan" and "Misinko".

Thanks to them, I was progressively improving my content, and learning
how to correctly create levels.
Also, the user "Bobesh8" helped me adding something... really interesting.
BUT, you'll have to see that on "v. 5.0."

Meanwhile, here you have, the progressive improvement of Sonic 1: Special Version.