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Sonic News Network
Sonic News Network

Sonic the Hedgehog 2 is a 2013 remastered version of the original Sonic the Hedgehog 2 for the Sega Mega Drive. It was developed by Christian Whitehead and Simon Thomley for the iOS and Android, following their remastered digital re-releases of Sonic the Hedgehog CD and Sonic the Hedgehog. It was released on 12 December 2013 for both operating systems simultaneously worldwide.

The iOS version also serves as a free update to the earlier mobile port of Sonic the Hedgehog 2.[1]

The port was later added to the Sega Forever service on 21 November 2017 for both mobile platforms to celebrate the 25th anniversary of the game's original release.[2][3]


After the success of Christian Whitehead's Sonic the Hedgehog CD port in 2011, they immediately started production on reworking Sonic the Hedgehog 2 for smartphones. This would be the first Sonic game for the Android phone.

Differences from the original

The new boss of Hidden Palace Zone.

  • Hidden Palace Zone, which was included as a scrapped zone during the development of Sonic the Hedgehog 2, was brought back, complete with its own original boss. It uses the Mystic Cave Zone's two-player music.
  • The player can access a secret sub-menu within the debug menu that allows them to use the elemental shields from Sonic the Hedgehog 3.
  • The ending now has a post-credits scene where it shows the Death Egg falling towards Angel Island, and then shows Eggman throwing a hissy fit while Knuckles is hiding in a bush similar to the packaging of Sonic the Hedgehog 3, foreshadowing that game.

Cheat codes

  • Level Select - Start the game in "NO SAVE MODE". When the Sega logo appears, tap the S, E, G and A letters logo (in that order). If done correctly, a ring sound will play. After this is done, tap the title screen with two fingers to access Level Select. On iOS, this used to be impossible to execute beyond the letter tapping until it was fixed in a later update.
    • An alternate method to unlocking Level Select is by using the gamepad: On the title screen, press Up, Up, Up, Down, Down, Down, Left, Right, Left, Right. If done correctly, a chime will sound.
  • Debug Mode - After activating the Level Select, go to the Sound Test and play the following tracks in order: 01, 09, 09, 02, 01, 01, 02, 04. Then, during gameplay, tap the top left corner of the screen to toggle/untoggle Debug Mode.
  • Game Config - To enable it, play sound "00" three times in the Sound Test to bring up the "Game Config" menu, which includes the following gameplay options the player can adjust:
    • Player: Allows the player to toggle between which characters they may play as (Sonic and Tails, Sonic alone, Tails alone, Knuckles alone or Knuckles and Tails).
    • Items: Lets the player toggle the behaviour of the Monitors in the game: all original Sonic the Hedgehog 2 items, Random which grants all of Sonic the Hedgehog 2 items, all of Sonic the Hedgehog 3 items (which also replaces the standard Shield Item with one of the three elemental shields first seen in Sonic 3), Random which grants all of Sonic the Hedgehog 2 items and Sonic the Hedgehog 3.
    • Flight: Toggles whether Tails can use his flying signature ability or not.
    • Air Cap: Toggles the running speed behaviour while in mid-air.
  • Special Stage - By selecting sounds "00" through "07" in the Sound Test, the player can change which Special Stage the player goes to before selecting to play the Special Stage. Playing sound "00" and selecting Special Stage takes the player to the Special Stage #1, playing sound "01" and selecting Special Stage takes the player to the Special Stage #2, and so on.
  • Proto Palace Zone - At the Level Select screen Sound Test after enabling Debug Mode, play the following tunes in order: 03, 03, 03, 0B, 10, 10, 10, 04 and select Hidden Palace Zone.


These are the achievements for Sonic the Hedgehog 2 for the iOS and Android. Please note that Achievements are not transferable between Game Center on iOS and Google Play Games Services on Android.

Name Experience Points Description
Quick Run 5,000 XP Complete Emerald Hill Zone Act 1 in under 35 seconds.
100% Chemical Free 5,000 XP Complete Chemical Plant without going underwater.
Early Bird Special 10,000 XP Collect all the Chaos Emeralds before Chemical Plant.
Superstar 5,000 XP Complete any act as Super Sonic.
Hit it Big 5,000 XP Get a jackpot on the Casino Night slot machines.
Bop Non-stop 10,000 XP Defeat any boss in 8 consecutive hits without touching the ground.
Perfectionist 10,000 XP Get a 'Perfect Bonus' by collecting every Ring in an Act.
A Secret Revealed 10,000 XP Find and complete Hidden Palace Zone.
Head 2 Head 10,000 XP Win a 2P Versus game against a friend.
Metropolis Master 10,000 XP Complete any Metropolis Zone Act without getting hurt.
Scrambled Egg 10,000 XP Defeat Dr. Eggman's Boss Attack mode in under 7 minutes.
Beat the Clock 10,000 XP Complete the Time Attack mode in less than 45 minutes.

See also


  1. Shaun Musgrave (16 December 2013). 'Sonic The Hedgehog 2 Remastered' Review - Setting Right What Once Went Wrong. TouchArcade. Retrieved on 23 November 2017.
  2. Malcom Owen (21 November 2017). Sega releases 'Sonic the Hedgehog 2' free on iPhone, iPad, Apple TV to celebrate 25th anniversary. AppleInsider. Retrieved on 23 November 2017.
  3. Peter Glagowski (21 Novemer 2017). Sonic the Hedgehog 2 joins Sega's free mobile game initiative. Retrieved on 23 November 2017.

External links

Main article | Staff | Manuals | Glitches (Sonic 2, Knuckles in Sonic 2) | Beta elements | Gallery | Prereleases (Nick Arcade | Simon Wai) | Re-releases (2006 | 2013 | 3D | Sega Ages)
Sonic the Hedgehog mobile games