Recomp / Games / Windows

LEGO Island decompilation (isle)

A complete decompilation of LEGO Island 1.1 that aims for instruction-level accuracy with the original Visual C++ 4.2 build; a portable fork grew from it.

Matching decomp Not stated complete
Stars3.5k
Commits, 30 days3
Latest releasecontinuousSep 18, 2026
Last pushSep 18, 2026

GitHub figures as of 2026-10-14, refreshed daily.

Facts

Original
LEGO Island (1997)
Platform
Windows
Method
Matching decomp
Provenance
Not stated what this means
Status
complete
Licence
LGPL-3.0
Team
isledecomp
Started
2023-04
First release
2026-09
Runs on
Windows
Needs the original
Yes: you supply your own legally obtained copy

How to get it legally

This project ships code only. Build or download it from the official repository, then supply data from a copy of LEGO Island you own. Recomp never links to ROMs, discs or game data.

This project was decompiled by isledecomp. Facts last checked 2026-10-13.

Sources

Something wrong or out of date? Send a correction.

Windows · 1996 · ★ 9.0k

Devilution

Diablo

Reconstructed source for Diablo, guided by symbol data left on the Japanese PlayStation port and a debug build hidden in the PC release. DevilutionX grew from it.

Decompilation Human-led

Windows · 1996 · ★ 9.8k

DevilutionX

Diablo and Hellfire

Modern, cross-platform Diablo built on the Devilution reconstruction; it needs DIABDAT.MPQ from your copy, or plays the shareware data.

Source port Human-led

Windows · ★ 0

Graveshift (clean room)

Wave-based zombie survival shooters (original game in that style)

Round-based zombie survival in an original cinema map, plus bot deathmatch, on a Three.js engine derived from the MIT-licensed kino-der-toten project, using only CC0 or generated art and sound.

Clean-room AI-assisted playable

Windows · 1999 · ★ 116

GTA2 RE

Grand Theft Auto 2

Reimplements the PC GTA2 10.5 executable function by function, compiled with Visual C++ 6 to match the original code, and can run either standalone or patched into the retail exe.

Matching decomp Not stated

Windows · 1998 · ★ 0

Open Road (clean room)

Late-1990s Need for Speed games (via the OpenNFS engine)

A late-90s arcade racer on OpenNFS compiled to WebAssembly: nine classic circuits keep their geometry with regenerated textures, joined by three original tracks and generic cars.

Clean-room AI-assisted playable

Windows · 2007 · ★ 134

Open Test Drive Unlimited (OpenTDU)

Test Drive Unlimited

A new Vulkan-based client for the PC version of Test Drive Unlimited, rebuilt game mode by game mode from the original; it runs on top of an owned install's data and aims at modern-system fixes and cross-platform support.

Rewrite Not stated