Is there a PC port of

Yes. Halo 2 decompilation passes 63% of the game's code matched byte for byte by kirklandsig. Source is available to build, and it runs natively on PC rather than through an emulator.

Is the Halo 2 PC port an emulator?

No. It's a native build of the game's code for PC (a decompilation, static recompilation or native port), so it runs like a PC game.

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Decompilation · Work in progress · 63.49% of game code matched

HALO 2 IS BEING DECOMPILED: 63% OF THE XBOX GAME'S CODE ALREADY MATCHES

Q: Do I need my own copy of

Yes. Nothing to play yet: this is source code and tooling for contributors. Building and checking it needs your own Halo 2 Xbox executable. No game files are included.

Halo 2 decompilation passes 63% of the game's code matched byte for byte

kirklandsig's Halo 2 Decompilation is a community matching decompilation of Halo 2 for the original Xbox: it recreates the retail executable's logic in readable C and C++, and every recreated function must build, with the period-correct compiler, to exactly the same bytes as the original. It also decompiles the Havok physics library linked into the game, so vehicles, ragdolls and projectiles behave as they do on Xbox. Per the README, 10,179 of 11,326 game functions now match (63.49% of the game's bytes) and 1,267 of 1,436 Havok functions (60.04%). There is no playable port yet: a port is the stated longer-term research goal, using game data each user supplies from their own copy. The repo, created Oct 1, ships no game assets and has a LEGAL.md and PROVENANCE.md setting out its scope.

Original Xbox → Source code · by kirklandsig · 2026-10-31

You need: Nothing to play yet: this is source code and tooling for contributors. Building and checking it needs your own Halo 2 Xbox executable. No game files are included.

How to play Halo 2 on PC

Read the README, LEGAL.md and PROVENANCE.md on the creator's GitHub.
Follow docs/PROGRESS.md to see which areas are matched.
Contributors claim a function range and send pull requests, as the README explains.

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▶ Source & progress (GitHub)

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