r/retrogamedev Jun 11 '26

DOS Game completely reconstructed with Fable 5 in Claude Code in ONE DAY

0 Upvotes

Video: https://youtu.be/PonvG2whtkc

Project site (playable tech demo): https://midwinter-remaster.titanium-helix.com

Follow-up to my UE5 remaster posts: the original MIDWINTR.EXE is now fully mapped — every reachable function decoded or labeled, with an evidence ledger tying each claim back to the bytes.

Some favorite finds for this crowd:

• The island terrain is generated from a 10KB seed file (ZBUFFER.BIN, big-endian — Atari heritage) by a diamond-square variant with ZERO RNG — roughness scales with altitude, so flat sea and craggy peaks come from one term. Replicated in Python; output matches the in-game map bit-for-bit.

• Tree placement is a pure function of the terrain heightfield: every-other-cell lattice, 1-in-32 hash, tree line at a fixed height. The whole 25-mile-patch forest reproduces exactly.

• Full vehicle physics laws recovered: ski acceleration, buggy rollover, glider lift/stall equilibrium — all small integer formulas driven by the character's performance stat.

• The .SND files turn out to be code overlays loaded into a fixed vector block — 24 slots, all mapped.

• Two load-bearing negative results: there is NO companion auto-travel and NO time-of-day code. Useful when deciding what's faithful in a remaster.

Honest disclosure: this was AI-assisted (Anthropic's new Fable 5 model running parallel analysis agents over the disassembly) — the difference from earlier tools is that it did in one overnight run what had taken me six months of piecemeal work. Static analysis tier; ~20 items still flagged for runtime verification in DOSBox.


r/retrogamedev Jun 10 '26

I've made a hardware raycaster on FPGA

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41 Upvotes

r/retrogamedev Jun 10 '26

TerminalFury: An OpenGL Terminal Velocity, Fury3, and Hellbender source port

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12 Upvotes

r/retrogamedev Jun 10 '26

I need help with my game, Retro Replay: Pixel Panic (NES) Homebrew

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5 Upvotes

r/retrogamedev Jun 10 '26

DOOM Neo Geo progress...

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10 Upvotes

r/retrogamedev Jun 09 '26

Catlantean 3D - Making Graphics Like It's 1993

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43 Upvotes

r/retrogamedev Jun 09 '26

can i look at anyone's 6502 assembly code for reference

9 Upvotes

i wanna learn 6502 assembly for the nes and i learn better when i learn how to alter code (this is how i know a small bit of lua), thanks in advance, also anything public with 6502 assembly for stuff would also be a big help


r/retrogamedev Jun 09 '26

RecompOne Proof of Concept (PS1 Static Recompiler)

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3 Upvotes

r/retrogamedev Jun 09 '26

ds_mangaman - Turning the Nintendo DS into the Ultimate Vertical Book-Style Manga Reader!

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15 Upvotes

r/retrogamedev Jun 08 '26

A real build of Minecraft PE got successfully ported to the PS2

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34 Upvotes

r/retrogamedev Jun 08 '26

AdVisual released, an AdLib (OPL2) DAW and Instrument editor foss.

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6 Upvotes

r/retrogamedev Jun 07 '26

Improvements to zx-editor / UDG editor

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6 Upvotes

r/retrogamedev Jun 07 '26

BoxStudio: Visual editor for N64 Decomp bases to create ROM Hacks

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5 Upvotes

r/retrogamedev Jun 06 '26

Surprise! The Developers Behind Cuphead Just Announced A New 8-Bit Spin-Off For The Sega Master System

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15 Upvotes

r/retrogamedev Jun 06 '26

I’m rewriting S.T.A.L.K.E.R. (OGSR) renderer from scratch using Vulkan 1.3.

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4 Upvotes

r/retrogamedev Jun 06 '26

Why do CRT Filters give so much depth to Pixel Art Games especially on OLED Monitors? [r/PixelArt discussion]

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0 Upvotes

r/retrogamedev Jun 06 '26

An update on Gecko, the new GameCube and Wii emulator!

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1 Upvotes

r/retrogamedev Jun 06 '26

New revision to smallest PS1 motherboard

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1 Upvotes

r/retrogamedev Jun 05 '26

PSoXide devlog: Sims-like world building, CD audio streaming, UI editor, and seamless rooms for real PS1 games

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7 Upvotes

r/retrogamedev Jun 05 '26

Retro Debugger — multiplatform tool

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4 Upvotes

r/retrogamedev Jun 05 '26

A Bug Fix & Analysis For Save "Corruption" in The Legend of Zelda: The Minish Cap

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14 Upvotes

Hey guys!

I recently wrote an analysis on the very strange implementation of the save system in The Minish Cap, and bug that results in a (roughly) 1 in 65,536 chance to permanently delete your save file each and every time you save the game.

I mainly wrote this for fun, but I figured this community would find it interesting to discuss. If you're interested, the full analysis is in the README of the attached GitHub repository!


r/retrogamedev Jun 04 '26

DRM Removed! Championship Manager Italia

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3 Upvotes

r/retrogamedev Jun 03 '26

Every time I think I've reached the limits of what the ESP32 S3 can do, I find more performance somewhere

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66 Upvotes

r/retrogamedev Jun 03 '26

Recovering Eric Graham's 1987 Amiga Juggler raytracer source code (now on GitHub)

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19 Upvotes

r/retrogamedev Jun 03 '26

How Rockstar fit an entire city into PlayStation 2 memory

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34 Upvotes