The spike placements are identical to Sonic 2's final version.

The rings' glitchy sprites from this zone will be carried over to Marble Zone if the player advances to the latter zone.

The Crabmeat badnik uses a lost sprite from Sonic 1.

Many badniks and obstacles use glitchy sprites, including rings.

Only the Sonic 2 springs appear in the released version.

The springs from both Sonic games appear in this zone.

As a result, nearly every monitor in Green Hill Zone has been 'switched' with a different monitor.

Tails Life Monitors are present just as one is in Hidden Palace Zone, as all the monitors in Green Hill Zone haven't been changed to use Sonic 2s' monitor system.

Unfortunately, while this does fix the collision detection in Green Hill, it breaks it in all the other Zones. However, the collision detection for the entirety of the original Sonic the Hedgehog is present in the ROM and can be accessed through a variety of cheat codes.

Because this Zone was originally in the original Sonic the Hedgehog, and the collision detection is different in that game from Sonic the Hedgehog 2, Green Hill's collision detection is very glitchy.

Despite this Zone being in the original Sonic the Hedgehog, it appears in this prototype with the correct format for Sonic the Hedgehog 2.

Sonic & All-Stars Racing Transformed ReviewĢ1 November 2012 Zones Green Hill Zone The music and invulnerability both last until the end of the act.

When obtaining Invincible, stars are not seen but the music still plays.

The backgrounds of Hill Top and Chemical Plant don't move.

If Sonic and Tails are hit at the same time, lots of rings will sprawl out regardless of how many rings they actually have (provided the player has at least one ring).If Tails dies, the camera will follow him as he respawns until he goes off-screen.Tails can lose rings for the player if he is hurt.Each Zone uses music from the original Sonic the Hedgehog.Sonic and Tails are in different symmetrical designs on the end signpost.This feature was scrapped sometime after this build, but the sprites it uses are still present in the Simon Wai prototype. If Sonic runs into a wall while running at a fast speed, he will bounce back off of the wall.

The sprites of Sonic after running into a wall.

Sonic 1 scrap brain zone sprites