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Box art for Super Mario 64
DECOMPMODDecomp port / Mod · 1996 · N64 decompilation PC port

Super Mario 64

3 projects let you play Super Mario 64 together. Here's how they compare, and which one to start with.

B
Recommended

sm64coopdx by coop-deluxe

Rated B (Playable), the highest of the 3 projects here. It has synced enemies, a shared world and open source code.

Repository ↗

Every project, side by side

Recommended

sm64coopdx

coop-deluxe

B
PlayableYou can play together, with known gaps in what syncs or a rough setup.
Kind
DECOMP Decomp port
Stage
Playable
Co-op
91%
Synced
  • See each otherSynced
  • StoryUnknown
  • EnemiesSynced
  • WorldSynced
  • ItemsUnknown
Players say
Rate it and vote on its co-op %
Connect
Not stated
Players
Not stated
Tested
Player reports
Features
Synced enemiesShared worldOpen sourcePlayer reports
Latest release
v1.5.1 Jun 1, 2026
Last activity
Active Oct 8, 2026
GitHub stars
1,465
About this project

README says it synchronizes all entities and every level so players share one world, with a Lua modding API; latest release v1.5.1 on 2026-06-01 with 81 open issues and 45 open PRs at check time. License not shown in the captured README.

What you need

Your own copy of Super Mario 64.

Sources

-

Repository ↗Suggest a correction

sm64ex-coop

djoslin0

D
ExperimentalPrototype, research build, or abandoned before it got far.
Kind
DECOMP Decomp port
Stage
Abandoned
Co-op
58%
Synced
  • See each otherSynced
  • StoryUnknown
  • EnemiesUnknown
  • WorldUnknown
  • ItemsUnknown
Players say
Rate it and vote on its co-op %
Connect
Not stated
Players
Not stated
Tested
Player reports
Features
Open sourcePlayer reports
Latest release
No release yet
Last activity
Stalled Jul 2, 2024
GitHub stars
422
About this project

Original online co-op mod, archived by its owner on 2024-07-02; sm64coopdx describes itself as its continuation.

What you need

Your own copy of Super Mario 64.

Sources
Repository ↗Suggest a correction

Net64 (net64-coop)

net64-mod

D
ExperimentalPrototype, research build, or abandoned before it got far.
Kind
MOD Mod
Stage
Abandoned
Co-op
58%
Synced
  • See each otherSynced
  • StoryUnknown
  • EnemiesUnknown
  • WorldUnknown
  • ItemsUnknown
Players say
Rate it and vote on its co-op %
Connect
Not stated
Players
Not stated
Tested
Not checked
Features
Open source
Latest release
No release yet
Last activity
Stalled Jul 25, 2020
GitHub stars
40
About this project

Archived work-in-progress rewrite (GPL-3.0) that bundles emulator, hooks and session hosting. The older Net64+ client (MIT, last push 2023-07) adds a public server list, so it likely uses dedicated servers.

What you need

Your own copy of Super Mario 64.

Sources
Repository ↗Suggest a correction

Know another co-op mod for Super Mario 64? Submit it.