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Sonic 1 - Emerald Safari

Hack of Sonic the Hedgehog


This patch is a gameplay overhaul for Sonic The Hedgehog which gives each Chaos Emerald unique abilities that stack.

A simple save function has also been implemented.

How it Works: Each emerald you obtain from bonus stages will give the player new abilities.

These abilities are as follows: First Emerald Player 1 Gets one extra hit point per life before losing rings. (Does not stack with shields) Second Emerald Special stages are now always open regardless of ring count. Third Emerald Player 1 now has faster acceleration. Fourth Emerald Player 1 can stay underwater for extremely long periods of time. Fifth Emerald Player 1 now earns double rings in normal stages. Sixth Emerald Player 1 can now jump higher.

Extra Modifications:

  • Spindash added
  • Spike bug fixed
  • Speed cap bug fixed

SRAM: Saving: Game saves at each title card screen transition.

Loading: At The Title Screen, Hold B and Press Start.

Game Saves: Current Level and Act Current Emerald Count


  • Game will restart if no prior game save is detected. This is intentional as a checksum system in place.
  • Game does not save on Green Hill Zone Act 1 to prevent accidental save overwrites.

ROM / ISO Information:

  • Database match: Sonic The Hedgehog (USA, Europe)
  • Database: No-Intro: Genesis (v. 20210226-213851)
  • File/ROM SHA-1: 6DDB7DE1E17E7F6CDB88927BD906352030DAA194
  • File/ROM CRC32: F9394E97



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ContributorType of contributionListed credit
BillyTime! GamesOriginal Hacking

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