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Recent Updates

Sonic 1 Bugfixes & Optional Act Palettes

Hack of Sonic the Hedgehog


This hack aims to fix as many bugs as possible using SCHG tutorials online. Fixes:

  • Dynamic Palettes Per-Act (Optional)
  • Fixed Demo Playback (Unnoticeable and not needed as speed cap fix ruins this)
  • “PRESS START BUTTON” appears
  • Walk-Jump Removed
  • Fixed Ring Timers and added quick blink animation
  • Special Stage jumping responds to button presses like the normal jump (hold to jump higher)
  • Sonic collides with water after being damaged
  • Removed speed cap (mentioned above)
  • Sonic now has the Super Dash Attack or Spin Dash from Sonic 2
  • Fixed the death boundary bug
  • Fixed the camera follow bug (barely noticeable in-game)
  • Fixed the water palette on the Title Screen to be consistent with gameplay
  • Spike Behavior fixed
  • Sonic’s walking animation has been tweaked to look like the 2013 mobile version and Sonic movie credits
  • Fixed a “remember sprite” bug where objects appear destroyed when they aren’t when RAM is full (only noticable in Debug Mode)
  • REV01 Background effects ported
  • Fixed scattered Rings underwater physics

ROM / ISO Information:

  • Database match: Sonic The Hedgehog (USA, Europe)
  • Database: No-Intro: Genesis (v. 20180824-045026)
  • File/ROM SHA-1: 6DDB7DE1E17E7F6CDB88927BD906352030DAA194
  • File/ROM CRC32: F9394E97



RHDN Hack ImageRHDN Hack ImageRHDN Hack Image


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User Review Information

A Few Minor Issues

Reviewed By: G30FF on 19 May 2020

Overall, this is a great hack that accomplishes what it sets out to do. It adds the Sonic 2 style Spindash, it fixes bugs, and improves the game overall. Even the dynamic act palettes are interesting, though I don’t think I would play with them all the time.

There are two issues I have that prevents me from wholeheartedly recommending this patch:

  • The title screen “fix” for the water colors are a little odd, and I feel this should be optional. However, that’s only because I’m used to how the title screen looks normally, and I can live with the change.
  • Removing the speed cap introduces some unexpected issues with demos. Not just the demos played during the title screen, which the description acknowledges, but also during the ending and credits. For example, the ending sequence right after Final Zone plays so fast the music gets cut off before it ends.

If these were optional patches, this would easily be my preferred way to play. As is, this patch is great, and I do still recommend it as a vanilla plus improvement patch.

Version 1.1 Recommended - Yes

User Reviews
A Few Minor IssuesG30FF19 May 20201.1Yes