Mario in R.E.P.O.

4.8

Press M to play R.E.P.O. as Super Mario 64's Mario: full moveset, voice and music from your own ROM. Punch monsters, haul loot, co-op.

Mark X Opus 5.5 ExtraMade by me and opus 5.5 Extra effort

Multiplayerup to 6 players, in the game's own lobbies

How to join The host starts a private game from the main menu, picks a save and presses "Invite" in the lobby; friends accept the Steam invite, or use Join Game on the host in Steam. Everyone playing needs this mashup from Melty.

Play with your friendsSend them the game

About

Swap your robot for the real Super Mario 64 Mario, right inside R.E.P.O. Press M in the truck, the shop or any level, and M again to switch back.

Mario's model, animations, voice, sound effects and music all come from your own Super Mario 64 (USA) ROM through libsm64. Melty finds the ROM on your PC and builds the library for you on first Play.

What you get

His whole moveset with real SM64 physics against R.E.P.O.'s levels: triple jumps, long jumps, backflips, side flips, wall kicks, dives, belly slides, ground pounds.
Fight back: punches, kicks, dives, slide kicks and ground-pound shockwaves hurt and stun monsters and knock loot around.
Haul loot: punch next to a valuable to pick it up (big ones go over his head), then carry it to extraction and throw it or put it down. It rides R.E.P.O.'s own grab beam, so value loss and extraction work as normal.
Real danger: monster hits cost your R.E.P.O. health and knock Mario back, and big falls hurt.
Reactive SM64 music: Big Boo's Haunt in the manor, Snow Mountain in the arctic station, Inside the Castle Walls in the academy, Dire, Dire Docks in the museum. Koopa's Road kicks in when a monster hunts you, and the star fanfare plays when an extraction succeeds.
Co-op (up to 6): everyone with this mashup sees each other's Mario, animations and sounds. Host a Private Game and invite friends through Steam as usual. First version: Mario sync between two players hasn't been tested yet, so tell us how it goes!

Controls (as Mario)

| Key | Does | |---|---| | M | Mario / robot | | WASD | run | | Space | jump (double, triple) | | Left click | punch, kick, dive / pick up / throw | | Ctrl | crouch, long jump, ground pound / put down | | Hold E | R.E.P.O. grab beam (buttons, doors, carts) | | Hold Shift | tiptoe | | Scroll | camera distance | | H | controls card |

Credits

R.E.P.O. by semiwork. Super Mario 64 by Nintendo (read from your own ROM; nothing included). libsm64 from the Super Mario 64 decompilation. BepInEx and HarmonyX. Made with Claude Code. Code under the MIT license; remixes welcome.