Lego Island: 2 Open Source Clones Compared
LEGO Island Decompilation is a byte-for-byte-accurate recompilation of the original 1.1 binaries, built with the original Visual C++ 4.2 toolchain and limited to 32-bit Windows; it doesn't change the original game's code at all. LEGO Island, portable takes that same decompiled codebase and replaces its Windows-only libraries (DirectDraw, DirectSound, DirectInput, Direct3D) with SDL3 and other cross-platform equivalents, extending support to macOS, Linux, the web, mobile, and several consoles, and adds optional light modding through an extensions system. Both still require an existing copy of the original game.
Comparison table
Availability
- Status
- Playable
- Platforms
- Windows
- Play in browser
- No
- Mobile
- No
Project health
- Development status
- Active
- Last updated
- 5d ago
- Stars
- 3,467
- Contributors
- 41
- License
- LGPL-3.0
- Engine
- —
Compatibility
- Requires original assets
- YesOriginal LEGO Island game files are required; place CONFIG.EXE, ISLE.EXE, and LEGO1.DLL in legobin directory.
- Modding support
- —
Availability
- Status
- Playable
- Platforms
- Windows, Linux, OSX, Android, DOS, Web, iOS, Xbox One, PSVita, Switch, 3DS
- Play in browser
- YesPlay in Browser
- Mobile
- Android, iOS
Project health
- Development status
- Active
- Last updated
- 4d ago
- Stars
- 1,044
- Contributors
- 63
- License
- LGPL-3.0
- Engine
- SDL2
Compatibility
- Requires original assets
- YesAn existing copy of LEGO Island is required to use this project.
- Modding support
- YesSupports light modding using extensions framework.
| Title | LEGO Island Decompilation | LEGO Island, portable |
|---|---|---|
| Status | Playable | Playable |
| Platforms | Windows | Windows, Linux, OSX, Android, DOS, Web, iOS, Xbox One, PSVita, Switch, 3DS |
| Play in browser | No | YesPlay in Browser |
| Mobile | No | Android, iOS |
| Project health | ||
| Development status | Active | Active |
| Last updated | 5d ago | 4d ago |
| Stars | 3,467 | 1,044 |
| Contributors | 41 | 63 |
| License | LGPL-3.0 | LGPL-3.0 |
| Engine | — | SDL2 |
| Compatibility | ||
| Requires original assets | YesOriginal LEGO Island game files are required; place CONFIG.EXE, ISLE.EXE, and LEGO1.DLL in legobin directory. | YesAn existing copy of LEGO Island is required to use this project. |
| Modding support | — | YesSupports light modding using extensions framework. |
Known limitations
- platform: This is a decompilation for 32-bit Windows only and will not compile for other targets; see isle-portable for cross-platform support.
Frequently asked questions
Are the Lego Island clones on this page open source?
Yes — every clone catalogued here is an open-source project. Availability, license, and development-status details for each one are listed in the comparison table above.
What license do these Lego Island clones use?
LEGO Island Decompilation and LEGO Island, portable (LGPL-3.0).
Do I need to own the original Lego Island to play these clones?
LEGO Island Decompilation and LEGO Island, portable require original game assets to play.
Can I play any of these Lego Island clones directly in a browser?
Yes — LEGO Island, portable has a browser-playable build linked in the comparison table above, no install required.
Which Lego Island clone is the most actively maintained?
LEGO Island Decompilation and LEGO Island, portable are currently under active development, based on recent commit activity. See the "Development status" row above for every clone's current status.
See the full write-up for each clone, or go back to Lego Island.