Sonic the Hedgehog

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Sonic the Hedgehog
Sonic The Hedgehog Title.PNG
Company Sega
Header Yes
Bank {{{bank}}}
Interleaved {{{interleaved}}}
Type {{{type}}}
ROM 512 Kilobyte
Country JUE
ROM Speed {{{romspeed}}}
Video NTSC
Checksum {{{checksum}}}
CRC32 {{{crc32}}}
ROM map | RAM map | Text table | Notes | Tutorials

Template:Extensively Hacked


SonED2 is the primary Sonic the Hedgehog editor, working with Sonic 1 and Sonic 2; however, it requires that the game be prepared to produce a "split disassembly", where the level art, level layouts, object definitions etc. are split from the actual assembly code into separate data files. Work now goes into commenting the code such that it can be worked on.

The current most popular split disassembly for Sonic 1 is maintained by Hivebrain and uses SNASM68K for assembly. It (as well as SonED2 itself) can be downloaded from Hacking CulT (below).


There are many Sonic hacks spread all across the internet. For now, refer to the External Links to find Sonic Hacks.

Main article: List of Sonic the Hedgehog hacks

Sonic the Hedgehog Megamix is a hack by Tweaker and the Megamix team that stands out above the rest. It can be found here: This hack is actually still in development, but the currently available Version 3 could easily stand as a completed Rom hack.


Known Dumps

  • Sonic The Hedgehog (W) (REV00) [!]
  • Sonic The Hedgehog (W) (REV01) [!]
  • Sonic The Hedgehog (W) (REVXB)
  • Sonic The Hedgehog (MP)
  • Sonic The Hedgehog (W) (REV00) [t1]
  • All Goodgen [p#]
  • All GoodGen [h#C]
  • All GoodGen [#b]
  • Sonic_The_Hedgehog_SMD-IND
  • Sonic The Hedgehog 1 (REV01) - Dumped by Qjimbo

External Links

  • S2B A site devoted to research on Sonic 2 Beta. This site also has a lot of posts on their Forums regarding Sonic Rom hacks. sonic Rom hackers post screenshots, progress reports, and the latest downloads for their rom hacks. The forum mostly consists of serious rom hacers who will actually finish their hacks.
  • Sonicology Contains many useful Sonic ROM hacking guides.
  • Sonic Stuff Research Group Has a Sonic hack archive, and will host your hack! Link Updated.
  • RetroHack A growing community of Hackers, mainly based on Sonic Hacks, but all other hacks are welcome! This website has been built into the Forums, for easy content management, which means the Whole Site is skinnable.
  • Hacking CulT A popular site for Sonic hacks.
  • Sonic CulT A Sonic fansite.
  • Sonic Stadium Rom Hacking Forum This site has a lot of members that post information, screenshots, and downloads for their Sonic hacks. There are some great Sonic hacks posted here, but unfortunately most of the hacks here are unfinished and of low quality.
  • Sonic retro This site has a lot of information on Rom hacks for Sega Genesis Sonic games. Hacks can be downloaded from this site, and the Forum has information regarding updated to many of these hacks. This site seems to host higher quality and more complete Sonic hacks than other sites.