LethalMario64

Adds a Mario 64 suit to the suit rack. Put it on and you are Mario from Super Mario 64: the actual SM64 movement code (triple jumps, long jumps, backflips, wall kicks, dives, ground pounds), his model, animations and voice, with an SM64-style third-person camera. Switch back to any other suit and you're a normal first-person employee again.

Powered by libsm64, which runs the decompiled SM64 code and loads Mario's textures, animations and sounds from your own ROM at runtime. No Nintendo ROM data is included in this package.

You need your own ROM

A Super Mario 64 US ROM (sha1 9bef1128717f958171a4afac3ed78ee2bb4e86ce), as .z64, .n64 or .v64. Any filename works — the mod recognizes it by its fingerprint. Put it in either:

• your profile's BepInEx/config folder (mod manager → Settings → Browse profile folder), or
• anywhere you like, and set RomPath in BepInEx/config/lethalmario64.cfg to the file or its folder.

If you've played sm64coopdx / sm64ex-coop, it's found automatically in %APPDATA%.

Without a ROM the mod still works for you as a viewer: you see Mario players in a red-and-blue fallback suit and can't become Mario yourself. Everyone in the lobby needs the mod installed (suit lists must match, like any suit mod).

Controls

SM64	Keyboard / mouse	Controller
Stick	WASD	Left stick
A (jump)	Space	Jump button
B (punch / kick / dive)	Left click with empty hands, or F	Use-item button with empty hands
Z (crouch / ground pound / long jump)	Ctrl (Crouch)	Crouch button
Camera	Mouse	Right stick
C-Up: first-person look (Mario stands still, mouse looks around)	↑ or V
C-Down: cycle camera distance (close / normal / far)	↓
C-Left / C-Right: swing camera 45°	← / →
Next / previous skin	K / J
Unstuck (rebuild collision, back onto solid ground)	U

Everything else (E to interact, Q to drop, scroll, scanning, terminal, ladders) works as usual. Punches, kicks, dives, ground pounds and stomps damage enemies. SM64 fall damage (power-meter wedges) turns into Lethal Company damage.

Skins

Press K / J to cycle skins; everyone in the lobby sees your skin (it's synced, no files needed on their side). Built in: Mario, Luigi, Wario, Waluigi, SMG4, Naked Mario, Fire Mario, Metal Mario, Gold Mario, Wing Mario, Vanish Mario, Shadow Mario.

• Luigi, Wario and Waluigi use sm64coopdx's official palette colors.
• Metal Mario and Gold Mario use SM64's real metal-cap look (the ROM's metal texture, environment-mapped) and its metal footstep / jump / landing sounds.
• Wing Mario wears SM64's wing cap and can fly like in SM64 (triple jump to take off, hold jump to glide). Set WingMarioCanFly = false to keep the wings as a look only.
• Vanish Mario has the vanish cap's shimmering see-through stipple (purely visual).
• Naked Mario has no cap.

You can add your own skins: drop sm64coopdx palette .ini files into BepInEx/config/LethalMario64Skins/. (The vanilla model shares one color for shirt and cap.) Optional extra lines: GLYPH = 76 (letter on the cap, character code), NOCAP = 1, WINGCAP = 1, VANISH = 1, METAL = 1 (+ METAL_R/G/B tint).

Water and lava

Lethal Company water makes Mario swim like in SM64 (the game's own drowning still applies). Lava volumes on modded moons are burning floors: Mario does the SM64 lava bounce and takes damage.

Config (BepInEx/config/lethalmario64.cfg)

SuitName, RomPath, MarioScale, Volume, FallDamagePerWedge, MarioCanHurtPlayers, camera Distance / Height / AutoFollow / ArrowKeysAreCButtons / FirstPersonKey, controls BKey / LeftClickIsB / UnstuckKey, skins Skin / NextSkinKey / PrevSkinKey / WingMarioCanFly.