OpenXcom
Open-source engine clone of UFO: Enemy Unknown and Terror from the Deep that loads the original game files.
Rewrite Human-led wipFacts
- Original
- UFO: Enemy Unknown / X-COM (1994)
- Platform
- MS-DOS
- Method
- Rewrite
- Provenance
- Human-led · Repo created 2011, predates AI coding tools (GitHub) what this means
- Status
- wip
- Licence
- GPL-3.0
- Team
- OpenXcom
- Started
- 2011-02
- Runs on
- Windows, Linux, macOS
- Needs the original
- Yes: you supply your own legally obtained copy
How to get it legally
This project ships code only. Build or download it from the official repository, then supply data from a copy of UFO: Enemy Unknown / X-COM you own. Recomp never links to ROMs, discs or game data.
This project was rebuilt by OpenXcom. Facts last checked 2026-10-14.
Sources
Related
All games →1oom
Master of Orion (1993)
Engine recreation of the original DOS Master of Orion that needs the original files; this fork is no longer in development, with the vanilla branch carrying the latest engine.
64Doom
Doom
Source port of the original Doom to the Nintendo 64.
Abyss Engine
Diablo II
Clean-room reimplementation of the Diablo II engine written in C, aiming to recreate the original game. Last updated April 2024.
Barrett
Rise of the Triad
Rise of the Triad source port based on ROTTEXPR, with quality-of-life features and better support for current hardware.
Betrayal at Krondor recompilation
Betrayal at Krondor
Source reconstruction recovered from the DOS binaries that reaches a full byte match with the original executable.
Blood-RE
Blood
Source reconstruction of Monolith's Blood using matching decompilation, from the NBlood team.