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Sonic 2: Sonic 2: Simple Harmless ASM Hack

Hex Editors
Hex Workshop4.23Breakpoint SoftwareThe best Hex Editor. It has many, many useful functions.

General Editors
Chaotix Character Statistics Editor1.0Heran BagoAllows you to edit the stats of all 7 charcters in Knuckles Chaotix for the 32X. NTSC Version only.
Collsedit0.46UltimaCollision Editor for Sonic 2.
Diet Sprite1.0x86Edits object positions for Sonic 1.
drx' Feel1.0drxLets you edit levels in Ristar. Also lets you show objects and collisions.
ESE ConversorEsraelTransfer Sonic 1 levels from a Sonic 1 savestate to a Sonic 2 savestate.
Esrael Sonic Editor II0.05EsraelIPS patcher, checksum fixer, Nemesis, Kosinski, Kosinski Moduled, Enigma, Saxman compressor/decompressor, game genie convertor, SMD to BIN convertor, level layout, object position, bonus stage, special stage, cheat, title card, music playlist, level order and text editor for Sonic 1, Sonic 2 Beta, Sonic 2, Sonic 3 and Sonic 3K.
FixCheckSumEsraelFixes the checksum on any Megadrive/32X game.
GSavestate (with source)1.3KoramaA very good editor for Genecyst savestates. Views/Editor for 68000, Z80 and VDP registers, RAM etc.
LOst Library3.05LOstEdits mappings for Sonic 1, 2 and 3&K.
Maze0.99CyanSpecial Stage Editor for Sonic 1 Savestate.
MD ROM Header Editor1.00GerbilsoftEdits Megadrive/Genesis ROM headers.
MD ROM Header Editor1.11OverlordEdits Megadrive/Genesis ROM headers.
SonED0.50StealthLevel and tile editor for Sonic 1, 2, 3K and CD.
SonED21.00StealthEverything the original SonED had, plus Path Viewing, a Collision Editor, an Import from/Export to Image feature, and more. It also saves your work in individual data files for easy management.
Sonic 2 Special Stage ViewerSaxmanViews special stages for Sonic 2 in a savestate.
Sonic CD PC Fix1.3KoramaFixes the PC Version of Sonic CD so that it works on Windows XP.
Sonic Display Editor0.70SaxmanEdits positions of the rings, score, time and lives counters for Sonic 1 and 2.
Sonic R Save Editor1.00SaxmanEdits Sonic R (PC Version) saves, giving you emeralds and hidden characters.
StH Scene Editor1.00LOstEdits savestates properties for Sonic 1-Sonic 3K.

Text Editors
S2Text (with source)0.0TrzyA very old utility that searches for text in Sonic 2.
Sonic Text Editor1.10OverlordText editor for various Sonic and non-Sonic games with template support.
Text Cracker0.97bCyanEdits text in ROMs. It searches also for offsets, so if you search for 'SONIC', it'll also replace 'TPOJD' etc.

Sound Editors
Music Pointer Fixerv1.0.0.1Erik JSThis tool helps music porting between two Sonic games by fixing pointers from coordination flags. Furthermore, voice conversion is possible if you're dealing with S2 format, as well as having a Ristar song ready to be put in S1 (though you'll need to fix PSG and other things on your own, header and coordination flags will be arranged to work within S1 engine).
smpsTempo1.1337.1337ninekoThis really isn't a sound editor, though it's an utility that will help you pick the correct smps speed when you convert an XM with xm3smps or xm4smps.
Sonic 2 MP3 Tool1.0QJimboAdds MP3 music support to Sonic 2. Requires Gens or Gens+.
Sonic One Music EditorFuzzbuzzEdits music from Sonic 1.
Sonic QX0.31SaxmanMusic editor for Sonic 2 Beta. It can also import some General MIDIs into the game.
Sonic Sound Editor0.02SaxmanEdits music tempo for Sonic 1, imports WAV files to replace the "SEGA" sound for Sonic 1 & 2.
xm3smps3.3.2NinekoConverts songs from XM to SMPS (sonic 1 format). Now with a GUI.

Graphics Editors
ChaoSaX-Pal0.30MagusEdits palettes for Sonic1-Sonic 3K.
Chaotix Art Editor2.00JJFTailsAn utility that lets you edit some of the 32x art used un Knuckles Chaotix, like characters and import/export bitmaps.
HivePal0.2HivebrainPallet editor for Sega Megadrive games.
PalEd1.02Erik JSPalette editor for the Megadrive Sonic games.
PCXPal4.0HivebrainExtracts palletes from various image types and pallete files and converts them to TLP, Jasc or raw Megadrive pallete files.
PCXPal (source)3.0HivebrainSource code for PCXPal 3.0.
Sonic Advance PalTool1.00.0011Erik JSPalette editor for the GameBoy Advance Sonic games.
Sonik SpriteBetaUncompressed sprite editor for Sonic 1, 2, 3 and Sonic & Knuckles.
Sonik Sprite RemixBetaNew version of Sonik Sprite, with improved speed and the ability to edit compressed art. Only supports Sonic 1 so far.
Tile Ed0.54MrClickAn alternative for TLP.
Tile Layer Pro1.1SnowBroEdits graphics tiles for many types of ROM, including Megadrive.
Tile Layer Pro (hack)1.1SnowBroHacked TLP which opens *.BIN files properly.

ChaoSaX-RXL0.16SaxmanApplies RXL patches.
Stealth Patch1.4StealthCreates and applies IPS patches (normal and with extra data).

drx' Star Decompressor1.0drxLets you decompress data compressed using the Star compression (used mainly in Ristar)
drx' SSC Decompressor1.0drxDecompresses data compressed with the Sonic Spinball Compression (what an original name...). There's a list of offsets when you load Sonic Spinball as the source.
Esrael Compressor1.00EsraelCompresses things in Kosinski format.
Esrael Decompressor2.00EsraelDecompresses things in Nemesis and Kosinski formats.
KENS1.4 RC3MagusA set of DLLs which programmers can use in their programs to decompress/compress Nemesis, Kosinski, Kosinski Moduled, Enigma & Saxman stuff. Support for C/C++, Delphi, VB and Game Maker.
KENS (source)1.4 RC3MagusSource code for KENS 1.4 RC3.
Kosinski SearcherNemesisSearches for all Kosinski compressed archives within a ROM.
MD Programs PackNemesisCollection of compressors/decompressors for Nemesis, Enigma and Kosinski formats. Also includes a decompressor for the Sonic 2 sound driver, and the Nemesis searcher.
PRS CompressorNemesisCompresses PRS files.
PRS DecompressorNemesisDecompresses Dreamcast and Saturn PRS files.
PVM UnpackerNemesisUnpacks Dreamcast PVM files.
SADX DAT Sound UnpackerSanikUnpacks SADX (PC) DAT sound files.
SADX DAT Sound Unpacker (source)SanikSource for SADX DAT Sound Unpacker.
Sonic Heroes ONE PackerLightning HedgehogPacks Sonic Heroes (PC) ONE archives.
Sonic Heroes ONE UnpackerLightning HedgehogUnpacks Sonic Heroes (PC) ONE archives.
Sonic Heroes TXD PackerSanikPacks Heroes (PC) TXD graphics files.
Sonic Heroes TXD UnpackerSanikUnpacks Heroes (PC) TXD graphics files.
The Sega Data Compressor2.2 RC3MagusCompressor/Decompressor for Nemesis, Kosinski, Kosinski Moduled, Enigma & Saxman formats.

DebuGens1.25FuzzbuzzA special version of Gens that lets you dump eg. RAM, or Palettes in TLP format.
Genecystx.xxBloodlust SoftwareHas a real time debug. Very useful.
Gens2.11StefA Mega Drive/Genesis, Mega CD, 32x emulator with the best debugger.
Gens KMod2.12a 0.5KanedaLike DebuGens, but much better.
Gens Plus! CardosoAdds a bunch of features to the original Gens. Emulates Megadrive/32X/MegaCD as well as Master System and Game Gear.
sGensLOst A special version of Gens that shows some variables in real time for Sonic 1 and Sonic 2.

Snasm68k2.1DCross Productions Ltd.The best 68k assembler.

Archive File Managers
WinRAR3.51Eugene RoshalIf you don't have one already, here's a program that manages archive files such as ZIP and RAR files.

© 2004-2006 drx, All content on the website is licensed with the MIT license,
unless otherwise noted, meaning you can pretty much do anything you want with it.