OpenXcom total conversion mods

• 440kby ohartenstein23This is a Warhammer 40k total conversion for OpenXcom, based on an earlier space marine mod by Ryskeliini. As Force Commander for the Imperium of Man on a planet beseiged by Chaos, you must find a way to end the Warp Storm and purge your world!115.3k downloadsupdated 22 mo ago
• XX-Piratezby DioxineThe year is 2601. The Earth has been long conquered by aliens. You run a gang of mutant pirates. Rob aliens and their human proxies for fun, profit and power. But that is only just a beginning... (Won't be updated here anymore)38.2k downloadsupdated 6 y ago
• XX-Com: From the Ashesby FinnikX-Com's initiative failed, alien agents infiltrated Council of Funding Nations. You face a threat of total extermination, recover from the crushing blow, and find a way to continue the fight against aliens in a new setting.11.1k downloadsupdated 4 y ago
• RReach: The Fall, a Halo modby efrenespartanoA total conversion mod for OpenXcom set on the Fall of Reach, one of the last battles of the Human-Covenant War, from the Halo universe. Focused on a joint SPARTAN-III/Marine/Army team tasked to contain the Covenant.7.0k downloadsupdated 11 mo ago
• XX-Chroniclesby NordFantasy-themed overhaul. OXCE only.6.8k downloadsupdated 1 mo ago
• UUFO: Alien Takeoverby CooperTheChryssalidA strategy horror total conversion mod with lots of new content. Players face powerful aliens and scarce resources, with gameplay starting in close combat and later evolving to include longer-range weapons.4.6k downloadsupdated 5 mo ago
• TThe Great War of the Worldsby efrenespartanoWhat if WW1 and Battlefield 1 met The War of the Worlds? Fight the Martian Invasion in an alternate 1914 in this Total Conversion! Use historic and prototype equipment from the era4.3k downloadsupdated 22 mo ago
• UUNEXCOM: Bureau 11by fatsycophantSet in the same timeline as UNEXCOM, both a prequel and a standalone mod. Fight a secret war in the early 60s and lead Bureau 11: a special branch of the CIA tasked to research and stop any foreign intrusion, either Soviet or alien.2.3k downloadsupdated 4 mo ago
• CCounter-Terrorist Operationsby FilipHA total conversion mod set in the modern day. Lead an international task force against various terrorist organizations.2.2k downloadsupdated 2 y ago
• [[I.D.T.] Terminator: Tech-Commby HobbesTerminator Future War total conversion for OpenXCom. 30 years after Judgment Day, Skynet prepares the final offensive to eradicate humanity. John Connor and his Tech-Comm unit are the only hope of mankind to defeat the machines.1.8k downloadsupdated 17 mo ago
• NNuclearWorld: A Post Nuclear Strategy Gameby efrenespartanoA post-apocalyptic mod, inspired by the Fallout series!1.7k downloadsupdated 3 y ago
• UUNEXCOM: Directorate 17by fatsycophantThe year is 1958. As the KGB's Directorate 17, unravel a fascist conspiracy in Europe and its alien puppeteers. Prequel to UNEXCOM Bureau 11 and UNEXCOM proper.1.6k downloadsupdated 14 mo ago
• UUNEXCOM: War on Marsby efrenespartanoThe conquest of Mars has begun, and it's your work to ensure Mankind prevails over the alien Insurgents! Sequel to UNEXCOM1.5k downloadsupdated 22 mo ago
• XX-PirateZ v.N8by rezereThe year is 2601. The Earth has been long conquered by aliens. You run a gang of mutant pirates. Rob aliens and their human proxies for fun, profit and power. But that is only just a beginning1.4k downloadsupdated 3 y ago
• OOXC FACTIONSby Luke83Hybrid Mod of UFO & TFTD with an Alternate timeline. What if the Aquatic Aliens awoke early and help win the first war, what if our planet was conquered & our civilisation was lost ? Are you Brave enough to rise up and lead the resistance?940 downloadsupdated 7 y ago
• MMWEP Mod Integration for X-COM Files 1.0.7by Mister_XUwU- 3 new playable units, compatible with all armors: Werewolf,Kobold,Dragon - rebalanced characteristics of units - Changed magic hand moved to internal ability with some rebalancing - Added and redrew sprites for all 10 armors. And 12 new weapons785 downloadsupdated 15 mo ago
• OOpenXcom Extended Coop Modby xcomcoopteamOpenXcom Co-op Mod (OXCE) adds cooperative multiplayer to UFO: Enemy Unknown (UFO Defense) and X-COM: Terror from the Deep. Play the main campaign or custom battles with a friend over TCP/IP via the in-game Co-op menu.613 downloadsupdated 3 mo ago
• MMars-comby NordX-com on Mars. After the TFTD, before the Interceptor and Apocalypse. From the author of TWoTS and X-Chronicles. OXCE only.581 downloadsupdated 1 mo ago
• WWorld Resistanceby efrenespartanoLead the SPRA in the Chimeran War. Recover Gray Tech and turn the tide on this alternate WW2!435 downloadsupdated 12 mo ago
• DDOOM: Hell and Fireby ReugedRip and Tear until it's done428 downloadsupdated 22 mo ago
• OOpenSCPby Osobist_SCPAn SCP Foundation-themed total conversion.355 downloadsupdated 14 mo ago
• ((Discontinued) OpenScarfComby greenscarf(Discontinued) Total Conversion for QOL & Replayability351 downloadsupdated 3 y ago
• GGlobal Contractsby ThalloriCyberpunk-Alien-Action. A total conversion mod where a group of drones form a hivemind and start hacking the planet.275 downloadsupdated 7 mo ago
• HHalf-Life: Lambda-Commby Nuke2009An Half-Life inspired total conversion, in the scale of UNEXCOM and World Resistance.147 downloadsupdated 20 mo ago
• DDOOM: Hell and fire. Refinedby ssg-enjoyerMy own version of DOOM: Hell and fire. with doom sfx added. If you want me to add something or make a change please let me know. original creators : reuged and efrenespartano140 downloadsupdated 9 mo ago
• FFrom the New Worldby robinoxcRe-imagination of X-Com Apocalypse in OXCE.119 downloadsupdated 5 mo ago
• XXCultby Kalamona666huAn urban fantasy themed total conversion of the UFO game - lead a mystic cult on their path of freeing a psionic entity.79 downloadsupdated 6 mo ago

27 total conversion mods, most downloaded first. Each one has its own page here with what it needs to run and where its author publishes it; the files themselves stay with the author and are never re-hosted on this site.