Zig64 is a Commodore C64 MOS6510 emulator core written in Zig, designed for accuracy, efficiency, and seamless integration into C64-based projects. This emulator delivers cycle-accurate execution, precise raster beam emulation for PAL and NTSC video synchronization, and SID register tracking. Designed for C64 software analysis and program execution, it ensures faithful reproduction of C64 behaviour with high precision.