Halo Mega Bloks (Project Haggar) PC port

About this recompilation

Static recompilation and partial matching decompilation of n-Space's cancelled Xbox 360 Halo Mega Bloks prototype, Project Haggar. Includes reconstructed game-specific C++, UnrealScript and a ReXGlue PC runtime. Requires separately supplied original prototype files; no game data is included.

PC support and installation

PC

Build required

Native static recompilation (ReXGlue; Xenia GPU/kernel runtime without JIT)

Requirements

Supply your own prototype XEX, PDB and game folder. Python 3.10+, Visual Studio 2022 C++ Build Tools, LLVM clang 18+ (19.1.7 tested), CMake/Ninja and ReXGlue submodule; about 15 GB free.

Build instructions ↗

Sources

Maintainer reports boot to first level at 11-16 fps on Radeon 860M, not independently tested. Movement needs Ghost/Walk toggling; Warthog spawning and automatic structure building crash; the winch objective needs a dev-menu workaround. No complete-playthrough validation or downloadable release. Matching C++ is partial and optional hooks were not exercised in the documented baseline.

Maintainer documentation · Checked Oct 19, 2026 · 6634fe1

Source ↗