The GitHub repository for the Super Mario 64 decompilation project does contain the game itself. You cannot download the repository and immediately play Super Mario 64 on your PC. Instead, the repository provides the tools to build a new ROM from scratch, but it requires you to supply the original assets.
: A foundational repository for running the game natively on Windows and Linux. super mario 64 rom z64 github
The Z64 project boasts several key features and improvements, including: The GitHub repository for the Super Mario 64
: The core of the modern SM64 scene is the n64decomp/sm64 repository, which contains a full C-source code reverse-engineering of the game. super mario 64 rom z64 github