Sonic the Hedgehog 2: Long Version

Sonic the Hedgehog 2: Long Version is a ROM of Sonic the Hedgehog 2 Beta, except with everything restored.

Levels

Neo Green Hill Zone is just called and the same as Emerald Hill Zone.
Same old Chemical Plant Zone.
Aquatic Ruin Zone is the same as normal.
I don't know if this comes next, but Wood Zone is there with working conveyor belts and Act 2 is now made. BGM is the 2P Emerald Hill.
Dust Hill Zone turns from desert to snow. Act 2 is impossible. You go in circles. BGM is 2P Mystic Cave.
I don't know if these are next either, Casino Night Zone and Mystic Cave Zone are there.
If you've accessed the Hidden Palace on the new Sonic 2, then you should see the original Hidden Palace Zone. A beautiful zone with glowing bridges and pleasant waterfalls.
Genocide City Zone is recreated. Supposed to be a scary Halloween-like zone. Big city in background, moon surrounded by clouds making it look like a giant eyeball in the sky. You are running on top of buildings. Both acts are EXTREMELY SIMPLE. The Act 2 has a sewer-like area. It rises with water. In the beta, there was no air bubbles. Once you get into the water, remember that you have to get out as quick as possible. BGM is 2P Casino Night. Boss is Chemical Plant.
Metropolis through Wing Fortress are the same. But, in Wing Fortress, the lazers that shoot down the Tornado sound different.
Death Egg Zone has 3 acts. Act 1 and Act 2 are the same as Chemical Plant, but in space. Act 3 is the Death Egg you see in the normal release.

There is an Options menu where you can get the Level Select and Debug codes entered.

This is a ROM, and needs a Genesis emulator to play it. I prefer Gens.

Remember for entering codes on Gens: Enter is Start, A is A, S is B, D is C.

There is also a Knuckles version, where it would be if you locked Sonic 2 Beta onto Sonic & Knuckles. It takes more space on your computer, though.