: Uses a "free look" mouse aiming system for shooting and throwing grenades.
: Features faithful recreations of the UNSC and Covenant arsenal, including the Assault Rifle, Magnum, Shotgun, Plasma Rifle, and Needler. System Requirements halo-zero-pc-game-free-download-full-version
It is often distributed as a small ZIP file (~21 MB) that does not require a complex installation. Download Halo Zero 1.8.6.3 for Windows | Uptodown.com : Uses a "free look" mouse aiming system