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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. [Tutorial] How To Be a Good Beta Tester

    AURORA☆FIELDS, Nov 25, 2015
    Replies:
    18
    Views:
    21,072
    Blastfrog
    Apr 23, 2023

  2. Sonic Retro on GitHub

    MainMemory, Feb 9, 2014 ... 2 3
    Replies:
    53
    Views:
    43,753
    Devon
    Aug 23, 2024

  3. Who Can Test On Hardware?

    Quickman, Mar 18, 2010 ... 4 5 6
    Replies:
    115
    Views:
    76,931
    Devon
    Oct 25, 2024

  4. THE SonED2 thread

    Stealth, Sep 2, 2006 ... 9 10 11
    Replies:
    213
    Views:
    114,862
    Clownacy
    May 3, 2016

  5. SonLVL

    MainMemory, Feb 7, 2011 ... 38 39 40
    Replies:
    798
    Views:
    270,338
    MainMemory
    Jan 10, 2025

  6. Random Hack/Mini Project Thread

    Malevolence, Jul 4, 2009 ... 47 48 49
    Replies:
    965
    Views:
    499,294
    Kilo
    Apr 15, 2025

  7. Basic Questions & Answers thread

    Tweaker, May 29, 2008 ... 372 373 374
    Replies:
    7,472
    Views:
    1,414,271
    MarkeyJester
    Apr 15, 2025

  8. General Project Screenshot/Video Thread

    Tweaker, Jun 26, 2008 ... 271 272 273
    Replies:
    5,444
    Views:
    1,645,436
    TheBlad768
    Apr 21, 2025 at 3:01 PM
Topics

  1. VGM "data banks" help

    saxman, Aug 7, 2024
    Replies:
    0
    Views:
    200
    saxman
    Aug 7, 2024

  2. How do I add Double Jump in the Sonic 1 GitHub Disassembly?

    Mr. Funny Suitcase, Mar 30, 2025
    Replies:
    4
    Views:
    345
    MarkeyJester
    Mar 30, 2025
  3. Like x 8

    Sonic 3 Extended World Demo

    Jdpense, Sep 28, 2024
    Replies:
    0
    Views:
    357
    Jdpense
    Sep 28, 2024
  4. Like x 4

    ASM My custom implementations of decompression functions

    Devon, Mar 5, 2024
    Replies:
    0
    Views:
    365
    Devon
    Mar 5, 2024
  5. Useful x 6

    Aspect Edit - Open Source

    Glitch, Aug 26, 2024
    Replies:
    1
    Views:
    379
    Bobblen
    Aug 26, 2024

  6. I cannot find how to disable the Screen Lock in Sonic 1

    WillARing, Jan 18, 2025
    Replies:
    3
    Views:
    384
    Devon
    Jan 18, 2025

  7. Help with Lost World Modding(Wii U)

    Caped Baldy, May 22, 2023
    Replies:
    0
    Views:
    386
    Caped Baldy
    May 22, 2023

  8. Help How i can add SRAM In Sonic 1

    CupcakeLove67, Apr 17, 2025
    Replies:
    3
    Views:
    392
    MarkeyJester
    Apr 26, 2025 at 12:00 AM

  9. modding a genesis us version 1

    kay, Apr 13, 2025
    Replies:
    9
    Views:
    398
    kay
    Apr 15, 2025

  10. Help! I don't understand adding Chunks! (Sonic 1)

    DaBigJ, Mar 30, 2025
    Replies:
    2
    Views:
    399
    DaBigJ
    Apr 2, 2025
  11. Like x 8

    ASM My (Incomplete) Chaotix Disassembly

    Devon, Aug 7, 2024
    Replies:
    0
    Views:
    418
    Devon
    Aug 7, 2024
  12. Like x 3

    Utility Compressed Data Size Detector

    Devon, Apr 8, 2023
    Replies:
    0
    Views:
    439
    Devon
    Apr 8, 2023
  13. Like x 9

    HiveMap

    Hivebrain, Jul 13, 2024
    Replies:
    1
    Views:
    439
    Hivebrain
    Jul 26, 2024

  14. Cross Platform Retro-Sonic Datafile Unpacker

    GeffDev, Jan 5, 2023
    Replies:
    0
    Views:
    449
    GeffDev
    Jan 5, 2023

  15. My first post about my rom-hack of Sonic 1

    DoctorNikRobot, Mar 5, 2025
    Replies:
    2
    Views:
    456
    DoctorNikRobot
    Mar 5, 2025

  16. Battle Frenzy/Bloodshot glitchy texture intentional?

    tokumaru, Oct 8, 2023
    Replies:
    1
    Views:
    463
    Black Squirrel
    Oct 10, 2023
  17. Like x 3

    Just a quick FYI regarding BizHawk's ROM loader

    Devon, Aug 15, 2024
    Replies:
    1
    Views:
    471
    DigitalDuck
    Aug 15, 2024

  18. Hack Sonic New Adventures - Peanut Birthday Demo

    CupcakeLove67, Mar 9, 2025
    Replies:
    1
    Views:
    485
    MarkeyJester
    Mar 9, 2025

  19. Editing Sprites with Flex 2

    CupcakeLove67, Mar 21, 2025
    Replies:
    7
    Views:
    504
    DaBigJ
    Mar 23, 2025

  20. S3K Object Ram Object Code History Tracker Lua Script

    Cokie, Sep 23, 2022
    Replies:
    0
    Views:
    504
    Cokie
    Sep 23, 2022
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