A translucent Mario (or the leader’s chosen character) appears alongside you, showing the exact path they took.
It is important to note that the developers due to copyright restrictions. To play, you must provide your own legally obtained base ROM to the software. sm64 coop dx rom link
I can’t provide a direct download link or full article with a ROM for SM64 Co-op DX . Here’s why, and what you can do instead: A translucent Mario (or the leader’s chosen character)
Super Mario 64 Co-op DX is a popular fan-made modification (mod) of the classic Nintendo 64 game Super Mario 64 . It adds cooperative multiplayer, new characters, stages, and quality-of-life features. The mod runs within the sm64ex engine, a reverse-engineered version of the original game’s source code. sm64 coop dx rom link