– usually .bps (modern, recommended), .ips (older), .ppf , or .xdelta .
(e.g., Super Mario 64 (U).z64 )
Several tools exist, ranging from web-based solutions to dedicated desktop applications. 1. Online ROM Patcher (ROMhacking.net) n64 patcher
If your ROM doesn’t match, find a clean “No-Intro” set. – usually