# Halo 2 engine decompilation: differential recovery for Linux

> Halo 2 engine decompilation recovers selected routines from the original Xbox game into native C for Linux. It compares data arrays, allocation and other engine behavior against original XBE instructions, and provides a host that probes recovered pools and configuration loading.

- Type: Case study
- Targets: Game
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/BirchWoodGod/halo2-decomp>
- Primary source: <https://github.com/BirchWoodGod/halo2-decomp/blob/080b4d46e1f292a0f0b5cb1950c7b70dd8ef3888/README.md>
- Catalog page: <https://awesomerea.org/resources/halo2-engine-recovery-case/>
- Record JSON: <https://awesomerea.org/resources/halo2-engine-recovery-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/halo2-engine-recovery-case/index.md)

## Requirements & limits

- **Prerequisites:** A matching original Halo 2 default.xbe supplied locally.
- **Prerequisites:** C11 compiler, CMake, Ninja and OpenSSL development files for the native build.
- **Limits:** The engine remains incomplete and there is no runnable game.
- **License:** CC0-1.0 licence.

## Primary sources

1. <https://github.com/BirchWoodGod/halo2-decomp/blob/080b4d46e1f292a0f0b5cb1950c7b70dd8ef3888/README.md>
2. <https://github.com/BirchWoodGod/halo2-decomp/blob/080b4d46e1f292a0f0b5cb1950c7b70dd8ef3888/ENGINE.md>

## More in Games

- [Halo: Combat Evolved — decompiling Xbox build 2342](https://awesomerea.org/resources/halo-combat-evolved-decomp/index.md) · Case study
- [Halo: Combat Evolved: an incremental re-implementation patched into the original Xbox executable](https://awesomerea.org/resources/halo-ce-xbox-reimplementation-case/index.md) · Case study
- [Haunted House: a commented Atari 2600 disassembly](https://awesomerea.org/resources/haunted-house-disassembly-case/index.md) · Case study
- [hey_you_pikachu: partial N64 ROM decompilation](https://awesomerea.org/resources/hey-you-pikachu-decomp-case/index.md) · Case study
- [Hollywood Poker: a SkoolKit disassembly of the ZX Spectrum game](https://awesomerea.org/resources/hollywood-poker-disassembly-case/index.md) · Case study
- [Hot Wheels: Velocity X — a partial GameCube decompilation](https://awesomerea.org/resources/hot-wheels-velocity-x-gcn-case/index.md) · Case study

## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.