Never download pre-compiled versions of the game from third-party websites, as these files can contain malware or outdated, buggy code. Instead:
: Launch the sm64coopdx.exe application. On first run, it will request a Super Mario 64 .z64 ROM file.
ROM hacks can also be played, but they require —you cannot simply drop a ROM hack file into the game and expect it to work. Dedicated tools such as RM2ExCoop have been developed to help extract models and assets from ROM hacks and convert them into DynOS packs that SM64 Coop DX can read. However, if a ROM hack contains custom code or major changes, much of that code must be recreated using the game's Lua API for it to function in co‑operative multiplayer.
However, because SM64 Co-op DX executes as a native PC executable rather than running inside an emulator, it requires a specific asset source to legally generate the game files. This guide covers how the setup works, why you cannot download a pre-compiled game or ROM directly, and how to safely prepare your files. The Legal and Technical Reality of "ROM Links"
For a complete walkthrough on how to set up the software and add your ROM: sm64 coop dx rom link
Super Mario 64 Co-op DX is a creative, community-driven enhancement, but users must obtain the base game legally. No responsible guide or repository will provide a direct ROM link. Always support original game preservation by dumping your own copy.
Unzip the folder to a new location on your computer.
Play through the entire campaign online with up to 16 players.
9/10 – It’s the definitive way to replay SM64 with friends. Just be sure to avoid pre-patched ROM links, as they infringe Nintendo’s copyright. Search for “SM64 Co-op DX GitHub” to find the official patcher and documentation. Never download pre-compiled versions of the game from
: Enjoy low-latency online play with synchronized physics across multiple players.
Launch the installer. The software will prompt you to select your original Super Mario 64 (USA).z64 file. Point the application to the folder where you stored your backup. 3. Compile and Update
Download the latest release ZIP file from the Coop DX GitHub Releases.
You provide your own (specifically the US .z64 version). ROM hacks can also be played, but they
: A robust Lua scripting system allows for custom characters, new levels, and entirely different game modes (like "Tag" or "Hide and Seek"). Synchronized State
Tip: Ensure your ROM is the US version for best compatibility. 3. Launch and Patch Double-click the sm64coopdx.exe file to start the launcher. The application will prompt you to provide your .z64 ROM.
We do not provide direct links to SM64 Coop DX ROM or any copyrighted materials. Please ensure you obtain the ROM and patch files from reputable sources, respecting the intellectual property rights of the original creators.
Nintendo's stance is clear: they view ROM distribution as a threat to their intellectual property and legacy catalog. While emulators themselves are generally legal, the ROMs they run exist in a far more legally precarious space.
To play SM64 Co-op DX, you do not download a pre-patched ROM file. Instead, you download the and combine it with a legally obtained Super Mario 64 ROM.