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Engineering & Reverse Engineering(Mark this forum as read)
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Indexed colour palette Image
does anyone have one of mega drive colours?
Linaru 
  • 20 Replies
  • 4074 Views
Question : Game Gear Remakes?
Just wondering....
Zeoinx 
  • 42 Replies
  • 10714 Views
Poll   Patreon for The Chaos Layer? MarkeyJester 
  • 16 Replies
  • 4784 Views
Sega Rally PC file formats? Catalyst 
  • 0 Replies
  • 912 Views
Looking for art opinions.
I doodle with pixels
Linaru 
  • 9 Replies
  • 2526 Views
Tiles and Things
Questions from a noob
Top-Hatt 
  • 2 Replies
  • 1386 Views
SonicMT.bin
another birthday, another hack
Natsumi 
  • 22 Replies
  • 8214 Views
Sonic 1 The Next Level MarkeyJester 
  • 58 Replies
  • 24250 Views
Gorbichev's Revenge qiuu 
  • 15 Replies
  • 5366 Views
Optimizing the DMA queue
Now on GitHub
flamewing 
  • 29 Replies
  • 13534 Views
Flex (desktop versions now available)
web based tile / mapping / DPLC editor
snkenjoi 
  • 12 Replies
  • 8077 Views
questions about sprites Linaru 
  • 12 Replies
  • 2343 Views
Sonic Hacking Contest 2015 Results Spanner 
  • 36 Replies
  • 7021 Views
CrazySonic (Demo Release)
A very questionable Sonic hack.
Ralakimus 
  • 17 Replies
  • 10735 Views
SMPS in Sonic & Knuckles Collection
New 8/24: 1-up jingle resumes music
MainMemory 
  • 27 Replies
  • 13051 Views
Kirby in Sonic the Hedgehog 1 & 2
A New Way To Play Sanic
LoneDevil 
  • 5 Replies
  • 2295 Views
Hedgehog Abuse Simulator
SHC2015 Concept Demo Release
Selbi 
  • 6 Replies
  • 4326 Views
Sonic 3 & Knuckles: Pro Survivor
Second Demo Release (and the first in Sonic Retro)
NeoFusionBox 
  • 0 Replies
  • 2044 Views
Sonic 2: Return of Shadow/demo and website. JoenickROS 
  • 12 Replies
  • 7828 Views
Portal Gun in Sonic 2 snkenjoi 
  • 14 Replies
  • 14315 Views
Somari the Adventurer (Genesis/Megadrive)
Basically Mario in Sonic 1
LoneDevil 
  • 19 Replies
  • 13513 Views
Dust Hill hack level map? elvisish 
  • 3 Replies
  • 1844 Views
The most complete experience / top hacks?
Opinions and suggestions.
Vangar 
  • 15 Replies
  • 3612 Views
SonicXFreedomPlanet (Now includes a backstory and more stuff.)
Sonic meets Freedom Planet! (New Concept Art!)
Draxirch 
  • 26 Replies
  • 10523 Views
Sonic 1 FM - full source
"full" means everything, I.e. ASM, MIDIs, VGMs, bonus content
ValleyBell 
  • 6 Replies
  • 3306 Views
Might as well jump!
(Go ahead and jump!)
Top-Hatt 
  • 8 Replies
  • 2626 Views
My Sonic 3 cartridge never saved games tokumaru 
  • 4 Replies
  • 1858 Views
Sonic in Spelunky RazoZen 
  • 0 Replies
  • 1808 Views
Is there a Sonic Crackers hardware patch? Phugolz 
  • 2 Replies
  • 1825 Views
Gens MDP Plugins
What? How?
Top-Hatt 
  • 14 Replies
  • 2855 Views
Motorola ASM gems drx 
  • 0 Replies
  • 1258 Views
A neat little Genesis Devkit I saw Top-Hatt 
  • 17 Replies
  • 4151 Views
Sonic 2 Split Disassembly FraGag 
  • 119 Replies
  • 48902 Views
Various bugfixes for the Sonic 1 sound driver ValleyBell 
  • 3 Replies
  • 2492 Views
Optimized KosDec and NemDec, considerably faster decompression
UPDATE: New improved Kosinski and Nemesis compressors by flamewing
vladikcomper 
  • 32 Replies
  • 12382 Views
Sonic 1 Disassembly Hivebrain 
  • 66 Replies
  • 25443 Views
Shadow the Hedgehog general hacking discussion
Formely Shadow the Hedgehog test level found
ashthedragon 
  • 102 Replies
  • 60944 Views
An open question to E-122-Psi
Not a PM for a reason; opinions are welcome
nineko 
  • 28 Replies
  • 5244 Views
Genesis Port/Remake of Modern Sonic games?
Do any exist?
Lodmot 
  • 9 Replies
  • 2734 Views
SA2 Ranks? Chensen 
  • 2 Replies
  • 1019 Views
How to improve the PLC Queue
Who wants RAM/an obscene number of PLRs?
Clownacy 
  • 0 Replies
  • 911 Views
Saxman's Sonic Boom engine
Throw out your S2 disassemblies. Try this instead.
saxman 
  • 76 Replies
  • 29947 Views
Sega PC Reloaded
Four old games, working still/again
Korama 
  • 76 Replies
  • 45602 Views
Sonic 1 RAM for the RAM newbie? er1c1996 
  • 7 Replies
  • 2398 Views
Dr Robotnik's Mean Bean Machine Hacking Thread E-122-Psi 
  • 13 Replies
  • 4484 Views
Xoreos team working on Sonic Chronicles engine reimplimentation Sofox 
  • 9 Replies
  • 4012 Views
Help with porting S3K's layout format?
MCZ bug I can't seem to shake
Clownacy 
  • 10 Replies
  • 2426 Views
Sonic Heroes Prototype ADX files
I kinda want them
Glisp 
  • 1 Reply
  • 1953 Views
Sonic Runners sound files Azu 
  • 6 Replies
  • 2266 Views
S1-friendly improved Sonic 2 sound driver
April Fools' joke gone too far
Clownacy 
  • 4 Replies
  • 2777 Views
S&KC Mod Loader
Because why not
MainMemory 
  • 2 Replies
  • 1863 Views
Sonic 2 Delta v0.25
Test version
Esrael 
  • 15 Replies
  • 7921 Views
Amy In Sonic 1
"Amy Rose is here!"
E-122-Psi 
  • 261 Replies
  • 68322 Views
S3K to S1 SMPS Converter ValleyBell 
  • 16 Replies
  • 10724 Views
Sonic 2 Special Stage Editor
Windows and Linux; v0.2.0
flamewing 
  • 34 Replies
  • 15179 Views
Sally in Sonic 1! E-122-Psi 
  • 161 Replies
  • 63520 Views
Sonic Advance Hacking
Just a general Sonic Advance hacking thread.
Demonic722 
  • 27 Replies
  • 9783 Views
SoniPlane
HELP WANTED! - SEGA MegaDrive plane editor (beta 1.1.1) - in-dev:
Natsumi 
  • 24 Replies
  • 10290 Views
Making Sonic 2's sound driver good
A collection of guides too short for their own topics
Clownacy 
  • 1 Reply
  • 2114 Views
Get Blue Spheres? Cinossu 
  • 14 Replies
  • 7728 Views
Blue Sphere Password Algorithm Reverse-Engineered ArrowCase 
  • 4 Replies
  • 2800 Views
Rocket Knight Adventures Compression
Tool Help Required
StephenUK 
  • 2 Replies
  • 1818 Views
[S1] Considerably speeding up level loading
Gotta go fast, right?
Natsumi 
  • 14 Replies
  • 4259 Views
Strange fix to test out
I want to see if it's just me
Clownacy 
  • 4 Replies
  • 3197 Views
GSXPwn snkenjoi 
  • 0 Replies
  • 1700 Views
How to improve PCM playback quality with Sonic 2's sound driver Clownacy 
  • 3 Replies
  • 2500 Views
Sonic 3 Cz v2.0
Launch Base unglitched!
Hayate 
  • 41 Replies
  • 22627 Views
Sonic Boom: Rise of Lyric File Formats NeKit 
  • 1 Reply
  • 4043 Views
Need help ripping sound effects from the DC version of SA2 IndyTheGreat 
  • 4 Replies
  • 2999 Views
Sonic Heroes something MainMemory 
  • 44 Replies
  • 28114 Views
Dragon Crystal (SMS) Disassembly and Exploration
Yay Sega roguelikes
trykaar 
  • 12 Replies
  • 5886 Views
Sonic Adventure: Beta Chao Garden Restoration Vertrex 
  • 6 Replies
  • 4542 Views
[Tutorial] How to interactively add objects to SA2 levels flarn2006 
  • 2 Replies
  • 1798 Views
How to fix speed issues in Sonic 2
A step-by-step guide
redhotsonic 
  • 12 Replies
  • 8642 Views
Saturn Homebrew 101
how do?
Lostgame 
  • 0 Replies
  • 1626 Views
How to extend the sound ID range in Sonic 2's sound driver
(properly)
Clownacy 
  • 0 Replies
  • 1687 Views
Sonic Hacking Contest 2014 Results Spanner 
  • 26 Replies
  • 10771 Views
Fixed Water in the Chao Gardens (Sonic Adventure DX PC) IndyTheGreat 
  • 8 Replies
  • 6546 Views
Metal Sonic Hyperdrive
Metal Sonic in Sonic 1-3K included
LoneDevil 
  • 18 Replies
  • 11175 Views
Playable Metal Sonic in Sonic CD
Halloween release
LoneDevil 
  • 17 Replies
  • 9396 Views
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