Proto Palace Zone

Proto Palace Zone is a secret Zone in the 2013 re-release of Sonic the Hedgehog 2. It is basically a copy of the original Hidden Palace Zone prior to its deletion for the original (and emulated versions) Sonic the Hedgehog 2.

Overview

 * Further reading: Hidden Palace Zone (Sonic the Hedgehog 2)

To access Proto Palace Zone, the player must first access the Level Select (start the game as "No Save Mode", tap the S-E-G-A letters when the Sega logo appears and hold two fingers at the title screen), he/she must input the Debug Mode code in the Sound Test (01, 09, 09, 02, 01, 01, 02, 04) and then must input an exclusive code in the Sound Test as follows: 03, 03, 03, 0B, 10, 10, 10, 04. (A Ring sound will play if successful.) Then the player selects Hidden Palace Zone. Despite that this layout is the final revision of the Zone before its deletion, changes were still made, such as the platforms over the old mid-level pit and newly functioning water slides (however, the Redz have their original behavior restored). If the player jumps on the non-Debug emerald-like object, he/she will be warped back to the Level Select. The background music used for Proto Palace Zone is the unused Track #10.

Trivia

 * If the player dies in this Zone by any means, the game will not load this Zone and will load Hidden Palace Zone instead.