Announcement
v10.13Update for Mac OS X 10.13 and later.
Make Mac OS X 10.13 build the default. Should resolve "damaged and can't be opened" issue on recent Mac OS X.
Steam
DEFCON
Also known as DEFCON, d, defcon
Inspired by the 1983 cult classic film, Wargames, DEFCON superbly evokes the tension, paranoia and suspicion of the Cold War era, playing on the fascinating aspects of psychological gameplay that occur during strategic nuclear warfare.
Last update
12 May 2026
Players now
4
Original sources
1
Latest update
Latest updates
Update history
Browse past updates and patch notes for this game.
- November 2020
- Steam post image Looking back at it now, 2020 doesn’t feel like a banner year for strategy games, but that doesn’t mean there haven’t been a few gems. The list below – gathered by a panel of experts an…
- January 2020
- Steam post image For a time it looked as though strategy games had sunk into a kind of deathly malaise, unsure which territory to claim next and which ones it should leave well and truly alone. Fast forward to 2020, tho…
- November 2019
- Steam post image Steam post image Steam post image Steam post image You’ll ocassionally find someone on the internet sounding off about how the strategy genre is dead. If you see such a person in the future, send…
- June 2018
- An entirely objective ranking of the 50 best PC strategy games ever made, now freshened up to include everything from 2017 and 2018. From intricate, global-scale wargames to the tight thrills of guerrilla squads, the br…
- March 2018
- Civilization VI: Rise and Fall wants to solve a problem. That problem is perpetual growth, and it plagues many 4X games. Whether your aim is world conquest or cultural hegemony, victory in Civilization and many of its c…
- September 2017
- Hello. This is Spawn Point, a new not-quite-regular feature in which we take a genre, series or other facet of gaming culture, and try to convince you to give it a shot. It might be those hero shooters you ve always wan…
- May 2017
- Today's Deal: Save 85% on DEFCON !* Look for the deals each day on the front page of Steam. Or follow us on twitter or Facebook for instant notifications wherever you are! *Offer ends Friday at 10AM Pacific Time Steam p…
- February 2017
- If you fancy a break from watching the crawl towards nuclear annihilation live on TV, you can now jack into virtual reality and watch it sped-up in Defcon VR [official site ]. Introversion Software today launched the fr…
- Introversion joins the VR party! After Prison Architect, our most successful game is DEFCON - a nuclear war strategy game inspired by the 80s movie War games (If you've not seen it, so yourself a favour and check it out…Patch notes
- Introversion joins the VR party! After Prison Architect, our most successful game is DEFCON - a nuclear war strategy game inspired by the 80s movie War games (If you've not seen it, so yourself a favour and check it out…Patch notes
- December 2012
- Today's Deal: Save 75% on DEFCON ! Look for the deals each day on the front page of Steam. Or follow us on twitter or Facebook for instant notifications wherever you are!
Gallery
In-game media
Achievements
Community progression
Top picks from 22 Steam achievements, sorted by player unlock rates.
- Merry ChristmasNuke Santa and thereby end Christmas for everyone, for ever more11.8%
- Nice trySink an entire enemy fleet of six subs, before they can launch a single nuke10.3%
- Had enough yet?Nuke a city with a population already reduced to 0.0M8.4%
- VictoryWin a game online6.9%
- Hit and runLaunch all nukes from a fleet of six subs and escape without losing a single sub in the process6.4%
- Explore RussiaNuke Moscow and Leningrad in a single match5.5%