Repo ↗ · Source README ↗ · Markdown & license bundle
Image reference (original game): Grand Theft Auto V · original-game artwork, provided by IGDB. Image rights remain with their respective owners. This illustrates the referenced original game, not the actual visuals of this rewrite or mod.
Source maintainer: oh-ashen-one · Revision: bb36e802d76b · Catalogued: 2026-10-12
Source license: Apache-2.0 · LICENSE · Article: Source README (format adapted)
The source README follows, with formatting adapted for this site and images replaced by source links. Feature, completion and testing claims belong to its authors and have not been independently playtested here. The Traditional Chinese translation was prepared with AI assistance.
Elden Ring Bosses in GTA 5
[README image：Source checks](https://github.com/oh-ashen-one/elden-ring-bosses-in-gta-5/actions/workflows/checks.yml)
Fight Malenia, Starscourge Radahn, Fire Giant and Godfrey inside actual GTA V Story Mode using GTA guns, explosives, cars and helicopter weapons.
This is an open-source mod and local asset-conversion toolkit. The imported Elden Ring models, rigs and animation clips run inside GTA with custom GTA-side encounter behavior. The in-game mod is called Elden Los Santos.
Public source release
The core crossover has run on an M3 Ultra through CrossOver with GTA V Legacy 1.0.3889.0. Technical gameplay checks covered imported animation, native gun/car/Buzzard damage, attack contacts, stagger, defeat and reset. The owner subsequently reported that the playable build looked great.
The v0.1.0 source release includes multi-boss battles, travelling fireballs, gravity-thrown traffic, police/SWAT/helicopter support, custom second phases, filming cameras and quick reset. Publication was approved by the project owner on October 6, 2026.
Verification scope: the Windows mod compiles and 24 offline regression suites pass. The latest multi-boss/spectacle additions have not been independently verified in rendered gameplay; the complete setup has not been reproduced on a second machine. Those limits are documented without treating build checks as gameplay evidence.
Start here: Getting started · Technical setup and build instructions · Playtest guide and controls · Latest features and limits
Bosses and encounters
| Boss | Encounter |
|---|---|
| Malenia | Original imported rig/clips, source-timed sword contact, stagger and defeat. |
| Starscourge Radahn | Dual-sword contact, with GTA traffic gravity throws in the source release. |
| Fire Giant | Enlarged to approximately 60 metres for helicopter-scale fights; the source release adds travelling fireballs and ground shockwaves. |
| Godfrey | Original imported axe animation/contact, with a custom second-phase ground shockwave in the source release. |
The mod removes the fixed boss-count restriction and lets bosses fight each other, including duplicates. Actual game capacity and performance still apply. You can explore GTA between encounters; there is no ten-minute play limit. The new city-support and filming features are optional. Co-op is not included.
What you need
- Your own GTA V Legacy and Elden Ring installations and locally supplied game assets.
- The compatible native ASI / Script Hook V setup described in the technical guide.
- The documented local conversion/build tools to produce your own private asset package.
The currently tested host is an M3 Ultra running Windows GTA V through CrossOver. This is a mod for the retail game, not a standalone game download or a native macOS port. The complete setup has not yet been reproduced on a second machine.
Code and documentation
| Location | Contents |
|---|---|
| gta/src/ | Native mod, combat, animation/root motion, damage, city support and filming controls. |
| gta/asset-tools/ | Local extraction, rig/material/animation conversion and DLC packaging. |
| gta/tools/ | Guarded launch, package verification and reversible installation. |
| gta/tests/ | Native API, combat, collision, asset and installation regression checks. |
| gta/OWNER-TEST.md | Controls, precise test steps and rollback. |
| HANDOFF.md | Implementation handoff and verification history. |
See the compiled material audit for the texture/shader feedback check.
Fidelity and scope
We preserve imported source geometry, rigs and selected animations while adapting them to GTA’s renderer and engine. GTA shading, hair/fur, cloth, collision and behavior differ from Elden Ring. This is not a one-to-one port of Elden Ring’s renderer, complete boss movesets or AI. The new second phases and crossover abilities are our GTA-side encounter design.
Open source and credits
Our original code is Apache-2.0 licensed. Upstream components retain their own licenses and attribution; see NOTICE, UPSTREAMS.json, asset-tool credits and the ER Mario implementation lessons.
Retail game files, converted models/textures/animations, generated motion data, motion-enabled binaries, vendor runtimes, saves and credentials are not distributed in this public repository. Players supply their own game content locally.
This is an unofficial fan project, unaffiliated with Rockstar Games, Take-Two, FromSoftware or Bandai Namco.
Earlier prototype history
This repository began as Modern Warfare 2 AI, exploring an MW2 Terminal airport crossover. That older prototype remains in the history and legacy folders, including runtime/, crates/ and the Terminal plan, with its upstream notices intact. It is not the current GTA mod or its setup path. Other active crossover builds, such as Dark Souls × MW2, are separate projects; the backlog and ownership notes record that split.
License and provenance
The README and its translation retain Apache-2.0 terms. Changes comprise translation, links and formatting. Editable Markdown, the original README, LICENSE and NOTICE files are included in the linked bundle. This grants no rights to the original games, their assets or trademarks.
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Elden Ring Bosses in GTA 5 (formerly Modern Warfare 2 AI)
Copyright 2026 Modern Warfare 2 AI contributors
Original contributions in this repository are licensed under Apache License 2.0.
This repository includes a source snapshot of 2010 Rust Rewrite Mashup
(ab43b8a9e923bdc4ad7effb874f6efec155577f1) under runtime/.
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https://github.com/SK8-ENGINE/skate-3-rust-engine
- SkyCraft, by chasmlol and contributors:
https://github.com/chasmlol/SkyCraft
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