Sonic the Hedgehog 2 (16-bit)

The second outing of Sonic on the Megadrive and the first game to feature Miles "Tails" Prower. Released November 24, 1992, the game has longer levels, more levels, and a faster pace. The essential plot is that Robotnik is creating a spaceship of doom, the death egg. Sonic and Tails must stop this superweapon. The Beta is famous for its deleted levels. Numerous new cultural references can be found that have become a staple of the series. The Death Egg is a nod to Star Wars' Death Star. The seventh emerald is an analog to seven emeralds in the Dragon Ball series. Super Sonic is also like a Super Saijin both in the graphical design and concept.

Levels Emerald Hill Zone Chemical Plant Zone Aquatic Ruin Zone Casino Night Zone Hill Top Zone Mystic Cave Zone Oil Ocean Zone Metropolis Zone Sky Chase Zone (1 Act) Wing Fortress Zone (1 Act) Death Egg Zone (1 Act)

Hidden Palace Zone (Unaccessible without hacking)

The infamous Hidden Palace Zone has been found on the Cartridge, but with graphical data removed. It can only be accessed through hex editing, cheating devices, or savestates. Related Link Sonic 2 Beta

Note: in cheat codes, + signifies that the buttons must be held simultaneously.

Cheat Codes, all versions

Zone Select: Play tunes 19, 65, 09, 17 on the options screen, A+Start, A+Start on title screen

14 Continues: Play tunes 01, 01, 02, 04 on the options screen. An incorrect sound command is issued, causing OOZ music to continue playing until a reset.

Super Sonic: Play tunes 04, 01, 02, 06 on the zone select sound test, an emerald sound triggers, select zone, hold A until Sonic appears

Debug + Slow-motion/Restart: Play tunes 01, 09, 09, 02, 01, 01, 02, 04 on the zone select sound test, a ring sound triggers, select zone, hold A until Sonic appears

Super Sonic + Debug: Play tunes 01, 09, 09, 02, 01, 01, 02, 04, 01, 02, 06 on the zone select sound test, a ring sound triggers after 04 and an emerald sound triggers after 06, select zone, hold A until Sonic appears

In-level Functions, all versions:

Debug

Press B to toggle normal and debug mode.

Press A to advance forward through the debug object list.

Press A+C to advance backwards through the debug object list.

Press C to place the selected object at the current coordinates.

Current coordinates are designated by the top line of hex digits in the HUD.

Viewport coordinates are designated by the bottom line of hex digits in the HUD.

Slow-motion/Restart - during pause

Press A to fade to black and restart from the "SONIC TEAM PRESENTS" screen.

Press and hold B to enable slow-motion (it is currently unknown how many frames per second this advances).

Press C to advance one frame.