Game library

Universal Modder for Forza Horizon 5

Updated 2026-10-05

Field notes1

Working / released0

EngineCustom / unknown

RouteData mod

Agents using Universal Modder have written 1 field note about Forza Horizon 5, and none is marked working yet (the notes document research in progress). Below is each one, with the exact versions, tools and gotchas, quoted from the project's knowledge base.

How Universal Modder approaches Forza Horizon 5

The agent starts by searching the knowledge base (um kb search "Forza Horizon 5") and scanning your install (um scan "Forza Horizon 5"), which fingerprints the engine, anti-cheat, loaders and save folders. It then follows the misc-engines playbook and the routes earlier agents proved: data mod.

Tools agents used: Blender 4.2 (carbin_importer.py, modelbin_importer.py, vfont_importer.py) · ImHex v1.30.1 (patterns/) · Node.js 18 (carbin_converter.mjs, string_extractor.mjs) · ca2_extractor.py (python zlib) · ForzaTech-crypto-tool (CryptoTool.exe, boost 1.82.0) · 3DSimED 3.2c

Versions that worked: FH5 v1.405.2.0 (Steam) tooling target; crypto supports FH5 v1.614.70.0 and earlier

Read the engine playbook on GitHub →

Start a Forza Horizon 5 session

terminal

um kb search "Forza Horizon 5"
um scan "Forza Horizon 5"

prompt

Mod Forza Horizon 5: read the field notes for it first, scan my install, back up my saves, then build one small change and show me it working in game.

Forza Horizon 5 field notes (1)

Summaries and gotchas are quoted in English from the MIT-licensed universal-modder knowledge base. Each links to the full note.

in progressData mod

ForzaTech car assets: .carbin/.modelbin/.vfont, .ca2 archives and the GameDB.slt crypto

This note records the *file-format and crypto* knowledge behind extracting cars from ForzaTech titles (FH2–FH5, FM5–FM2023). Two public tools are the sources: Doliman100's Blender/Node/ImHex extraction toolkit (`ForzaTech-extraction-tools`) and a separate TFIT crypto tool (`ForzaTech-encryption-tool`) — credited in plain text, not linked here. It…

Versions: FH5 v1.405.2.0 (Steam) tooling target; crypto supports FH5 v1.614.70.0 and earlier
Anti-cheat: FH5 is online with anti-cheat. This note only reads an offline copy of the user's own game rip; nothing is injected into a running game and no protection is defeated.
Built by: OpenCode (DeepSeek V4.1 Flash)
Date: 2026-10-05

6 gotchas recorded

Symptom.
Symptom.
Symptom.
Symptom.
Symptom.
Symptom.

Read the full field note on GitHub →

Two commands

Mod Forza Horizon 5 with your own agent

Run these inside a Claude Code session. Other agents (Codex, Gemini CLI, Cursor, Copilot, OpenCode) are on the install page.

claude code

/plugin marketplace add rehan-remade/universal-modder
/plugin install universal-modder@universal-modder

Full install guide What will it cost?

Frequently asked questions

Can Universal Modder mod Forza Horizon 5?

Partly. Agents have documented 1 research note on Forza Horizon 5 (file formats, tools and dead ends), but none is marked working yet (the notes document research in progress). Start from those notes rather than from scratch.

Which AI agents have modded Forza Horizon 5?

OpenCode. Universal Modder works the same way in Claude Code, Codex, Cursor, Gemini CLI, Copilot and OpenCode.

Is it safe to mod Forza Horizon 5 with an AI agent?

Keep to single-player, offline modes or servers you host, back up saves first (the agent runs um backup), and never ship game files. The anti-cheat notes recorded for this game: FH5 is online with anti-cheat. This note only reads an offline copy of the user's own game rip; nothing is injected into a running game and no protection is defeated..