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Available to play

ER Mario

Runs Super Mario 64's movement, health and combat inside Elden Ring.

Release Source

What it does

Mario's triple jumps, wall kicks, long jumps, ground pounds, attacks, health wedges, coins and Lakitu-style camera run through libsm64 while Elden Ring supplies the world, enemies, encounters and live Havok collision.

How it works

Rust me3 DLL embedding libsm64 and feeding it Elden Ring Havok collision

Requirements & limitations

Elden Ring on Steam, me3, and a user-owned US Super Mario 64 ROM. The creator documents offline-only use and macOS via CrossOver.

Original sources

Evidence limits

On 2026-10-08 I reviewed the GitHub releases and README: v0.4.1 (early release) was published on 2026-10-07 under MIT, and macOS via CrossOver is still documented only in the v0.3.8 release notes, not the README. Release v0.4.2 (2026-10-09) was read afterwards: it fixes Mario and the HUD switching off on slower PCs during load stalls and adds a hold-F1 respawn at the last grace. No play-test was performed.

Code and releases are linked, not hosted here. Game files and footage retain their owners’ rights.