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Engineering & Reverse Engineering

General hacking and modification of Sonic and other Sega games by means of hex editing, assembly, and other means (such as using pre-existing hacking tools).
BEFORE ASKING QUESTIONS, PLEASE READ/SEARCH THIS FORUM AND THE ARCHIVE BELOW FIRST.

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Important Topics

  1. Who Can Test On Hardware?

    Quickman, Mar 18, 2010 ... 4 5 6
    Replies:
    115
    Views:
    77,202
    Devon
    Oct 25, 2024

  2. THE SonED2 thread

    Stealth, Sep 2, 2006 ... 9 10 11
    Replies:
    213
    Views:
    115,166
    Clownacy
    May 3, 2016

  3. SonLVL

    MainMemory, Feb 7, 2011 ... 38 39 40
    Replies:
    798
    Views:
    271,181
    MainMemory
    Jan 10, 2025

  4. Sonic Retro on GitHub

    MainMemory, Feb 9, 2014 ... 2 3
    Replies:
    53
    Views:
    44,047
    Devon
    Aug 23, 2024
  5. Informative x 7

    Help So, you want to start hacking Sonic? (2025)

    Clownacy, May 10, 2025
    Replies:
    18
    Views:
    988
    ProjectFM
    May 18, 2025 at 4:15 AM

  6. Random Hack/Mini Project Thread

    Malevolence, Jul 4, 2009 ... 47 48 49
    Replies:
    966
    Views:
    501,050
    CupcakeLove67
    Apr 27, 2025

  7. Help How i can add SRAM In Sonic 1

    CupcakeLove67, Apr 17, 2025
    Replies:
    12
    Views:
    946
    CupcakeLove67
    May 16, 2025 at 2:31 PM

  8. General Project Screenshot/Video Thread

    Tweaker, Jun 26, 2008 ... 271 272 273
    Replies:
    5,446
    Views:
    1,649,829
    Dark_
    May 8, 2025

  9. Basic Questions & Answers thread

    Tweaker, May 29, 2008 ... 373 374 375
    Replies:
    7,483
    Views:
    1,419,940
    Devon
    May 17, 2025 at 9:27 PM

  10. [Tutorial] How To Be a Good Beta Tester

    AURORA☆FIELDS, Nov 25, 2015
    Replies:
    18
    Views:
    21,190
    Blastfrog
    Apr 23, 2023
Topics

  1. ЭIИO2: Rebirth

    doc eggfan, Jul 29, 2008 ... 2 3
    Replies:
    54
    Views:
    13,332
    Overlord
    Nov 4, 2008

  2. Zone ID 01 02 03 09 Animation

    Dracula, Sep 29, 2006
    Replies:
    2
    Views:
    1,736
    Dracula
    Sep 29, 2006

  3. ZOMG Savestate Format

    GerbilSoft, Aug 25, 2010
    Replies:
    13
    Views:
    4,190
    Sik
    Apr 19, 2012

  4. ZOMG hack has started! screens inside.

    GameNerd Advance, May 15, 2006 ... 2
    Replies:
    32
    Views:
    5,289
    Varion Icaria
    Jun 1, 2006

  5. Zilog Z80 instruction set compared to 68K instructions

    Ravenfreak, Nov 16, 2010
    Replies:
    0
    Views:
    3,607
    Ravenfreak
    Nov 16, 2010

  6. Z80 Porting Question

    Dracula, Jul 23, 2006
    Replies:
    6
    Views:
    1,761
    Dracula
    Jul 30, 2006

  7. Z80 music driver disassembly

    Sik, Mar 18, 2006 ... 2
    Replies:
    28
    Views:
    4,110
    jman2050
    Apr 25, 2006
  8. Like x 3

    Z80 in ASM68k with macros

    Hivebrain, Jul 12, 2021
    Replies:
    6
    Views:
    1,506
    Hivebrain
    Jul 15, 2021

  9. Z80 asm to hex guide

    Ravenfreak, Nov 22, 2010
    Replies:
    3
    Views:
    4,628
    Ravenfreak
    Nov 23, 2010

  10. YOUR QUICKMAN NEEDS YOU

    Quickman, Aug 28, 2005
    Replies:
    15
    Views:
    2,360
    Quickman
    Sep 1, 2005

  11. Your ideal "extended Sonic 2" hack?

    TheLazenby, Sep 19, 2006
    Replies:
    3
    Views:
    1,750
    djdocsonic
    Sep 20, 2006

  12. YOU'LL HAVE A BALL 2.0

    Hitaxas, Sep 1, 2008 ... 2
    Replies:
    28
    Views:
    5,676
    Tweaker
    Sep 4, 2008

  13. You have noticed this bug of S3&K?

    Absolute Chaos, Feb 29, 2004
    Replies:
    16
    Views:
    2,673
    Badass Cyborg
    Mar 1, 2004

  14. Yo, Stealth.

    Tweaker, Dec 10, 2005
    Replies:
    5
    Views:
    1,550
    drx
    Dec 10, 2005

  15. YM3812 synth chip?

    GerbilSoft, Apr 16, 2004
    Replies:
    5
    Views:
    2,975
    saxman
    Apr 25, 2004

  16. YM2612 / YM2413 Note & Frequency Table

    Bentoc, Jun 28, 2021
    Replies:
    0
    Views:
    743
    Bentoc
    Jun 28, 2021

  17. YM2203

    Aurochs, Dec 12, 2006 ... 2
    Replies:
    25
    Views:
    8,402
    Vangar
    Dec 14, 2006

  18. Yeth

    Banoon, Sep 4, 2010 ... 2 3 4
    Replies:
    69
    Views:
    37,619
    LordOfSquad
    Aug 4, 2016

  19. Yet another problem

    Irixion, Jun 15, 2008
    Replies:
    7
    Views:
    2,022
    Irixion
    Jun 17, 2008

  20. Yet another generic ROM hack

    GreggSalt, Oct 14, 2017
    Replies:
    1
    Views:
    1,541
    Overlord
    Oct 14, 2017
Showing threads 1 to 20 of 3,262

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