Zelda Oot Custom Actor Toolkit

Zelda Oot Custom Actor Toolkit (CAT), created by Nokaubure, is a powerful development tool for creating custom actors in The Legend of Zelda: Ocarina of Time and other Zelda64 titles. Originally designed to disassemble and reassemble actors directly from ROMs using MIPS, CAT now supports compiling and injecting C-written actors with libraries like z64ovl and z64hdr. It also allows users to extract and inject object files, edit random item drop tables, copy animations between zobj files, and analyze texture offsets. With support for Link and pause menu overlays—treated as actor IDs 0 and -1—CAT provides unmatched control over custom gameplay mechanics. Integrated with zzrtl for project management, this toolkit remains an essential utility for serious ROM hackers, even as decompilation advances.

* This is a legacy tool (Old Way). New way of adding custom actors is with Z64Rom but I haven’t found good documentation or tutorials on this yet. If you know of one or would like to make one please contact us.

LINKS:
Download Executable
GitHub Source Code
Custom Actor Tutorial
Zelda OoT NPC Maker