Mickey Saves the Day 3D Adventure

A decompilation of Disney's Mickey Saves the Day 3D Adventure (2000; German title Micky auf Ganovenjagd), and a port that plays it on macOS and in the browser.

• src/: C/C++ source that the original Microsoft compilers turn into the game's exact bytes, checked function by function.
• port/: the same source built natively for macOS and for WebAssembly.

No game files and no Microsoft software are included. You need your own copy of the game.

Play

You need the game CD as an .iso image: the German CD (Micky auf Ganovenjagd) or the British English one; the port picks the language from the CD.

Browser: open https://japabu.github.io/mickey-saves-the-day-3d-adventure/ and pick your ISO. It stays in your browser; nothing is uploaded.

macOS (Apple Silicon, with the Xcode command-line tools, cmake and ninja):

cmake -S port -B out/port/build -G Ninja
cmake --build out/port/build
MICKEY_CD=/path/to/Micky_auf_Ganovenjagd.iso out/port/build/Steamboat

To build the browser version yourself, see port/README.md.

Settings, improvements and troubleshooting: port/README.md.

How it is made

The decompilation and the port are written by Claude (Anthropic's model). Every function is compiled with the original compiler (Visual C++ 5.0 or 6.0) and accepted only if its bytes are identical to the original's.

Progress

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███████████████░░░░░ 73.93% of game code
2,181 KiB of 2,949 KiB of game code (16,931 of 18,138 functions) compiles to identical bytes (checked by tools/msvc/check.sh). 1.0 KiB (0.0%) more is proven the same logic up to register and stack-slot renaming (// EQUIV ...: proven, re-proven by check.sh), 272 KiB (9.2%) is reviewed as the same logic by comparing both instruction streams (// EQUIV ...: reviewed), and 467 KiB (15.8%) is written as source but neither yet (// TODO). Statically linked library code and EH funclets are not counted.

Module	Compiler	Game code	Identical	Proven same	Reviewed same	Written, differs	Not written
Steamboat.exe	VC6	15 KiB	57.5%	0.0%	0.0%	41.9%	0.6%	██████░░░░ 57%
SteamboatApp.dll	VC6	894 KiB	69.5%	0.1%	7.8%	19.8%	2.9%	███████░░░ 69%
MBEngine.dll	VC6	431 KiB	79.8%	0.0%	7.4%	12.2%	0.6%	████████░░ 80%
MBCom.dll	VC6	5.2 KiB	100.0%	0.0%	0.0%	0.0%	0.0%	██████████ 100%
mbruntime.dll	VC6	12 KiB	100.0%	0.0%	0.0%	0.0%	0.0%	██████████ 100%
RuntimeLib.dll	VC5	607 KiB	64.8%	0.0%	10.8%	24.4%	0.0%	██████░░░░ 65%
MfActorLib.dll	VC5	137 KiB	83.7%	0.0%	16.2%	0.1%	0.0%	████████░░ 84%
MfPoLibrary.dll	VC5	250 KiB	88.1%	0.0%	2.5%	9.4%	0.0%	█████████░ 88%
MfImageLib.dll	VC5	81 KiB	94.4%	0.0%	4.0%	1.6%	0.0%	█████████░ 94%
PiccoloRT.dll	VC5	104 KiB	54.4%	0.1%	29.4%	16.0%	0.1%	█████░░░░░ 54%
PiccoloComp.dll	VC5	86 KiB	77.6%	0.0%	5.7%	16.7%	0.0%	████████░░ 78%
PiccoloConsole.dll	VC5	105 KiB	65.3%	0.0%	12.7%	21.9%	0.0%	███████░░░ 65%
mflinalg.dll	VC5	23 KiB	79.9%	0.0%	13.0%	7.1%	0.0%	████████░░ 80%
mfutil.dll	VC5	73 KiB	87.0%	0.0%	10.7%	2.3%	0.0%	█████████░ 87%
zlib.dll	VC6	27 KiB	100.0%	0.0%	0.0%	0.0%	0.0%	██████████ 100%
plugins/PscClassInfo.dll	VC5	5.7 KiB	86.9%	0.0%	13.1%	0.0%	0.0%	█████████░ 87%
plugins/PscCompiler.dll	VC5	0.1 KiB	100.0%	0.0%	0.0%	0.0%	0.0%	██████████ 100%
plugins/PscContentInfo.dll	VC5	21 KiB	83.3%	0.0%	13.2%	3.5%	0.0%	████████░░ 83%
plugins/PscDebugger.dll	VC5	41 KiB	77.1%	0.0%	22.9%	0.0%	0.0%	████████░░ 77%
plugins/PscStdlib.dll	VC5	28 KiB	95.0%	0.0%	5.0%	0.0%	0.0%	█████████░ 95%
plugins/PxtMath.dll	VC5	3.9 KiB	100.0%	0.0%	0.0%	0.0%	0.0%	██████████ 100%

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Legal

Mickey Saves the Day 3D Adventure and its characters belong to Disney; the engine belongs to its authors. This is a non-commercial preservation project with no original binaries, data or assets. Third-party open-source code in the source is listed in THIRD_PARTY.md.