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. You play a General hidden deep within an underground bunker.
User reviews:
Very Positive (20 reviews) - 90% of the 20 user reviews in the last 30 days are positive.
Very Positive (1,617 reviews) - 88% of the 1,617 user reviews for this game are positive.
Release Date: Sep 29, 2006

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Packages that include this game

Buy DEFCON + Soundtrack DLC

Includes 2 items: DEFCON, DEFCON Soundtrack

Buy Introversion Complete Pack

Includes 6 items: Darwinia, Uplink, DEFCON, Multiwinia, Darwinia Soundtrack, DEFCON Soundtrack


About This Game

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.
You play a General hidden deep within an underground bunker. Your mission is to successfully exterminate your enemy's civilian population whilst saving your own. Points are awarded or lost depending on both the efficacy and thoroughness of your nuclear vendetta and the number of your own civilian deaths. In order to win you must wipe out the enemy population and simultaneously disable the enemy's ability to retaliate against you. This is an extremely difficult task since launching an attack on the enemy exposes the positions of your own Ground Silos, Subs and Bombers the moment they launch nuclear weapons, making you extremely vulnerable and exposed to a crushing counter-attack.
Desperate attempts must be made to form fast, tactical alliances, alliances that may at any moment break-down to become the treacherous and most deadly of betrayals. Everyone looks to each other in a state of nervous suspense and paranoid accusation. In all-out nuclear Armageddon, everybody dies, everybody loses, you just have to make sure you lose the least!

System Requirements

Mac OS X
SteamOS + Linux
    Recommended: Windows XP, P3-600-Geforce 2, 128 Mb RAM, 60 Mb Hard Disk, Internet connection for multiplayer games
    • OS: OS X version Leopard 10.5.8, Snow Leopard 10.6.3, or later.
    • Processor: Intel Core Duo 1.66GHz+
    • Memory: 1GB of RAM
    • Graphics: 64MB of video memory
    • Hard Drive:
    • Processor: 1.8 Ghz
    • Memory: 1Gb
    • Graphics: 64Mb of memory
    • Hard Drive: 70Mb
Customer reviews
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Very Positive (20 reviews)
Very Positive (1,617 reviews)
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1,298 reviews match the filters above ( Very Positive)
Recently Posted
4.8 hrs
Posted: September 18
i love this game simple and fun
Helpful? Yes No Funny
YT PanBros HD (Trading)
3.8 hrs
Posted: September 17
Helpful? Yes No Funny
3.4 hrs
Posted: September 13
"It's global thermonuclear war, and nobody wins. But maybe, just maybe, you can lose the least"

Sums up the whole game in two sentences. The AI is one hell of a challenge. The sounds of children playing and people chatting in the background give it a sinister and forebording side. Graphics aren't very 2006, but this is a Cold War game, based on a Cold War 80s film. The graphics aren't meant to be great, and it helps give an authentic feel to the game. Also, at €10, it's not exactly breaking the bank.

Like no other game out there, this game really brings home the horror and loss that war inevitably causes, and all without any blood/gore effects. It's just the cold, distant '2.1 MILLION DEAD' reports that calmly appear after each hit that show you the impersonal and overwhelming destruction that MAD would have visited on the world. Just like in the film, you'll keep replaying, convincing yourself that you can win, that next time you'll be faster, smarter, better and outdo the enemy. But, just like the film, the only real winning move is not to play.

For best results, use a projector and stand with hands clasped at your back watching the bombs rain down.
Helpful? Yes No Funny
483.7 hrs
Posted: September 10
great game
all u need to do is git gud and kill everyone
10/10 would nuke usa, china, and russia 10x over again
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Pedro III (CanadianGamer)
4.2 hrs
Posted: September 9
great game if you can find a match
Helpful? Yes No Funny
2.2 hrs
Posted: September 8
This game is a heavy psychological trip into the mind of North Korean Leader Kim Jong-Un. Deep inside you can see his wildest dreams come to life in a matter of minutes. Each nuke that goes off into the sky from his beautiful homeland is a mere fragment of his dream coming to life.

But on the inside, it reveals something much deeper, deeper then Kim's Asian ♥♥♥♥ penetrating the ♥♥♥♥♥♥♥ of a nuclear missile hoping for then to grow baby missiles. You secretly see the dark side of Kim's mind take over as on the horizon, he sees a nuke slowly approaching his gracious palace, at first, he is happy to see the world that he has created that he had envisioned within his fantasies. But all those days with nuclear testing’s ♥♥♥♥ed up his brain, and soon realizes that all his nukes were shot down by the air defenses. Kim could not believe this, and after that, he realized that the nuke he saw was out to kill him.

"Shoot that ♥♥♥♥ing nuke down!" Yelled Kim as he was eating his last meal of imported Vodka and turkey.
"Okay sir" replied the helpless soldier, as he was strangely allured by Kims perfect body, and voice.
"Fire!" Yelled the soldier. The shot was fired, and ♥♥♥♥ing missed because he had no training in shooting actual nukes, as they only had training with small birds with a firework on them.
"Sir, it’s just circling the ♥♥♥♥ing nuke!" Yelled the endlessly turned on soldier, Kim replied with him licking the last remnants of his turkey,
“Shoot it again”
“Ok” The shot was fired once again, this time striking as a direct hit, Kim witnessed the nuclear explosion going on in the sky as its remnants fell down to earth, he had the tiniest little smile on his face, sipping the last drops of his vodka.
“Ha ha! You did well, to reward you, you get a free succ for little Kimmy!” Kim slowly pulled his pants down in joy, as he sat down in his throne. The soldier touched his magic Korean ♥♥♥♥, and as soon he began the succ, 5 more nuclear missiles were on the horizon.

“If I am going to die, I’m going to die during a succ, keep succing!” Kim felt the fire and heat from the missiles as the approached; almost as if he lost all hope, but still just a little happy on the inside. The succ continued for a good ten minutes, until the last second, when the climax occurred, but not just from Kim, but from the nukes as well.

The climax was almost perfectly timed with the detonation of the missiles. He felt the wall of fire raging toward him as he was splurging from his palace. The soldier felt endless joy from this. He grabbed Kims fat chin and muttered his last words before he would be covered in baked ♥♥♥,
“Thank… You… Kim…” And the wall of fire instantly obliterated the both of them, including their love juice.

-Pyongyang hit. 10.6 million dead-

At least they died happy, poor crazy Kim, and the gullible soldier who followed him through with it.

The game is also pretty good by the way.
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0.3 hrs
Posted: September 6
not my type of game
Helpful? Yes No Funny
0.7 hrs
Pre-Release Review
Posted: September 6
Great game and overlooked as its been out a long time. Keep your enemies close and your friends closer as when it comes to pushing the button you dont want to be looking at the screen and wishing you had launched sooner.

Always reminds me of the movie wargames.
Helpful? Yes No Funny
Most Helpful Reviews  In the past 30 days
5 of 5 people (100%) found this review helpful
2.4 hrs on record
Posted: September 6
This game is scarier than any of the horror games I've played- and it's not even a horror game!

It's a simulation/strategy game about nuclear war, if you couldn't figure that out. You nuke the enemies' cities to earn a better score, and if the enemy nukes your cities (or destroys your units), then you lose points and stuff. The team with the highest score wins. It is a very dark game, for example: you can hear people crying sometimes and when a city is hit with a nuclear missile it shows the amount of people who were killed, it's especially frightening if it's a place you live in or if loved ones live there. The soundtrack is FANTASTIC, and sets the mood of the game PERFECTLY. I'm not very good at playing the game, but you don't even have to play! You can set up AI battles, and I sometimes hop on and watch one. They're actually pretty entertaining, and the AI is good in my book. Speaking of setting things up, it's very customizable. A single game can be very time consuming if played in real-time, and the nukes take a while to reach its target. Also, when I played in real-time (and quit after ten minutes i dont have time for that) I felt like I was the one giving the OK to launch the nukes and responsible for the millions of deaths I caused, not to mention feeling guilty about my cities getting exploded by the enemies. Overall, it's a pretty good game, but it can be difficult and is very dark. Unfortunately, the last update was sometime in 2014, so it seems that the developers have stopped updating it, however it feels finished and the price is reasonable for $9.99 USD.

8/10 - Solid game.

But why is it scarier than the horror games I've played? That's because it can actually happen...
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1 of 2 people (50%) found this review helpful
1 person found this review funny
1.6 hrs on record
Posted: September 15
Got this game in a bundle a year ago. Finally launch it and have fun but only demo mode. Key is gone, no site can help me, besides emailing the publisher, but don't think it's worth all the trouble since my proof is gone.
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Most Helpful Reviews  Overall
649 of 725 people (90%) found this review helpful
152 people found this review funny
0.8 hrs on record
Posted: December 26, 2013
My mom took my Laptop away after she saw it and tought i hacked the US Defense System.
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386 of 421 people (92%) found this review helpful
138 people found this review funny
4.4 hrs on record
Posted: October 25, 2014
For the most fun, play this game on a large wall with a projector.
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766 of 879 people (87%) found this review helpful
595 people found this review funny
1.1 hrs on record
Posted: November 26, 2014
Kim Jong Un Dream Simulator 2014

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295 of 318 people (93%) found this review helpful
128 people found this review funny
5.1 hrs on record
Posted: April 15, 2015
This is how much I love this game:

14-04-2015, 12:00
Channel Five News: "Breaking news: The US has launched a pre-emptive nuclear strike against North Korean ICBM silos causing collateral damage to several large cities and thus inflicting more than a million casualties. The exact numbers are not certain but the city of Pyongyang was hit directly as five silos where reportedly located in the center of the North Korean capital. The decision of dropping nuclear warheads on North Korea has stirred massive debate between UN members on whether or not the US should be punished for its deeds. China and Russia are calling for a world wide embargo on US goods and ..."

16-04-2015, 5:01 - From
Dear Charlene,
I miss you. How are you? Are the kids fine? How is the weather in New York? I guess you've heard about the Chinese surprise attack against the Pacific Fleet? Yeah. I don't think that I'll be home soon. High Command is deploying my squadron to Anchorage, Alaska. I hope that this doesn't escalate.
Love you,

17-04-2015, 14:15 - From
The President has just said on TV that we're at war with China! He said that we are mobilizing our nuclear assets! What does it mean!? And why oh why did we have to attack North Korea? What was it good for? Please Mick. You've got to come home.

17-04-2015, 15:57 - From
I can't go home. I've got to serve my country. I can't just let them kill Americans and let them get away with it! We had to nuke North Korea or we were going to be the ones being nuked! Anyway. Please take care of the kids...I have to take off in an hour or so...I could not come back alive. Just...take the kids, go to Vicky in the countryside. She may be crazy but she lives near a nuclear bunker. I'd feel better knowing that you and the kids are close to a bunker. ♥♥♥♥ might just hit the fan. I love you Charlie,

17-04-2015, 16:46 - From
Mick! I've just seen in the news that the Chinese are readying their nukes! I'm taking the kids to the subway! Please be safe and know that I love you too!

17-04-2015 - Flight Log Excerpt from '82-1068 Spirit of New-York' Coordinates CLASSIFIED

- Lt. Michael Davidsson 18:45:17: "Control. We're going dark in exactly five minutes. What are our orders?"
- Control 18:45:47: "Standby 82-1068. We're transmitting your orders. God's speed."
- Lt. Michael Davidsson 18:46:07: "Control. Are these orders legitimate? I me...
- Control 18:46:09: "I can assure you that these are legitimate and correct orders Luitenant. POTUS has called for them as OPFOR has launched its nuclear arsenal."
- Lt. Michael Davidsson 18:46:25: "That can't be true! When did they have the time to launch?!"
- Control 18:46:34: "That was just about two minutes ago Luitenant. Diplomacy has failed. Now do your job and make your country proud."
- Lt. Michael Davidsson 18:46:52: "*Audible sigh* Roger that Control. May God have mercy on our souls."
- Lt. Eugene Rodriguez 18:46:59: "Are we really going to nuke Beijing? This is madness!"
- Lt. Eugene Rodriguez 18:48:02: "Sir are you going to say something or not?! I call that we immediately turn ar..."
- Lt. Michael Davidsson 18:48:07: " Dammit Eugene! We have to do this! This is what we have trained for! Now stick to your orders!"
- Lt. Eugene Rodriguez 18:48:14: "I refuse! I'm taking us back home! I don't want to be remembered for murdering millions of people! They're people Mick!"
- Lt. Michael Davidsson 18:48:21: "I don't care! Orders are orders! Nuclear payloads are going to rain down on our friends and families! We have to avenge them!"
- Lt. Eugene Rodriguez 18:48:29: "NO! Wa...Wait! Mick! Come on! We've been friends for like forev..."*shots fired*
- Lt. Michael Davidsson 18:48:35: "I have to do this Eugene...there is no other option."*loud breathing*
- Control 18:49:30: "Luitenant. You have to go dark in a few seconds. Please confirm that you and your co-pilot have understood your orders."
- Lt. Michael Davidsson 18:49:37:"Control...Eugene refused to comply. I had to shoot him. He wasn't ready. I...I..."
- Control 18:49:48: "It's okay Michael. You did what you had to do. Finish your mission. I think that Baghdad's international airport will be your best landing spot. Anchorage is a viable target for nuclear retaliation now. Russia is readying its own nuclear arsenal for launch. I'm proud of you. America is proud of you."
- Lt. Michael Davidsson 18:50:04: "Thanks Jim. I hope you make it. I'm going dark in three, two, one"

Estimated Loss of Lives:
- BLUEFOR: 87.7 Megadeaths
- OPFOR: 216.4 Megadeaths
- BLUEFOR: *New York: 3 x 5 Megaton DF-5 Airburst ICBMs - 10 million casualties - infrastructure non-existent
- OPFOR: *Beijing: 16 x 1.2 Megaton B-83 Airburst Gravity Bombs - 21 million casualties - infrastructure non-existent
Unit With Highest Efficiency:
- 82-1068 Spirit of New-York - Target: Beijing - Pilots: Lt. M. Davidsson and Lt. E. Rodriguez - Status Unknown - Awarded Medal of Honor by POTUS

POTUS signing off.


As you can see...I thoroughly enjoyed this game. Buy it. Love it. Sleep with it. Write stories about it. I don't care. It's an exerience well worth your time and money.
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203 of 212 people (96%) found this review helpful
252 people found this review funny
2.1 hrs on record
Posted: May 4
Have only been playing the game for a very short while and have found myself in a very Fallout style 'Great War' situation between China and the United States.

- I sweat nerviously as minor skirmishes lead to my Naval power being destroyed beyond a pair of Submarines hiding away in the Ice Caps.

-The Chinese Navy has prevented any Recon Aircraft from penetrating to find the Chinese silo and Radar locations.

-Nearly an hour passes in DEFCON One and neither side takes the final steps toward the Nuclear Madness, I sneak my Submarines deep into Chinese waters, one off the coast of Tokyo, the other off the coast of India.

-I step away for a moment to make dinner.

-Alarms blare, Panic ensues. I return at a dead sprint stubbing my toe on a table and falling to the floor screaming in agony. I shout to my Girlfriend


-In the Chaos, Silo's spit forth their rods of death at major Chinese Cities. Aircraft Scramble from the assorted airfields located in Alaska, Fighters to draw fire for the Bombers carrying their horrifying cargo. The Chinese respond in kind, their Silos bursting to life. My submarines seize the opporunity to deliver a harsh counter attack firing their arsenel at Chinese silos.

Soon i manage to collect myself and make my way back to my computer horrified at the propects that await me. To my even greater horror i realized something.

The Chinese didn't fire first.

A TV show my son was watching in the background had alarms and threw me into a panic.

Soon after the casualty reports came in.

9/10 would plunge the world into a Nuclear Apocalypse because of a kid's TV show again.
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302 of 343 people (88%) found this review helpful
300 people found this review funny
6.4 hrs on record
Posted: June 14, 2015
This game taught me how to stop worrying and love the bomb.
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153 of 159 people (96%) found this review helpful
41.7 hrs on record
Posted: November 26, 2013
Defcon simply put is perhaps the most brutal yet elegant strategy game you will ever play. While the game only supports 1 map, little gamemodes and very little unit choice, this opens a whole new realm of micromanagement/strategy where games can be won in a matter seconds.

I could go for a whole page critically examining the intricate depths of Defcon strategy and how intense but fantastic it is, but honestly I find the mood of Defcon speaks for itself......

"The Defcon counter slowly counts down to DEFCON 2, as you manoeuvre your subs to deliver a fatal first strike to Asia. The slow hum of a massive turbine and background radio remind you of a massive nuclear bunker, where deep underground you are determining how many people die from your orders. The slow strings of a cello pass the time, as you anxiously wait for DEFCON 1.......3.........2...........1........the massive letters of DEFCON 1 flash across the screen along with a high pitched siren.

Suddenly you spring into action clicking on your subs, activating your dormant SLBM's methodically targetting the major cities across the Asian continent. A quiet piano beings to play but you don't realise it when your too busy concentrating. As you finish the last of your targets another warning signal blares and a small nuclear signal flashes on top of your sub. The SLBM's slowly fire up, then gracefully turn towards their targets. Satisfied you take a break and nervously watch the SLBM's fall down as a now louder piano plays sombre, dark notes......flash......Tokyo hit....4 million dead.....success your first SLBM hits the target dead on, soon after the entire coast of Asia is alight with bright flashes and messages.....Beijing hit.....Honk Kong hit......8 million dead.....6 million dead.

As the last of the SLBM eradicate the last survivors you glance at the scoreboard, excellent you are leading by 50 points. Content you move over to your Pacific fleet to co-ordinate your bombers to deliver another fatal attack on Asia and as you again click on further targets with deadly precission you hear the faint coughs of a woman along with the humming of the loud turbines. Horrified you realise how clean and elegant the deaths you have been presented with. A flash, a confirmation and a number killed. Reality brings you back as you further witness the extermination of the rest of Asia, the whole continent glows brightly as ALBM's rain upon the cities illuminating the world map.

Despairingly you imagine yourself deep underground, ordering the death of an entire population by a simple click and you don't even see their deaths. Only a small flash and a number killed.
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246 of 278 people (88%) found this review helpful
143 people found this review funny
31.1 hrs on record
Posted: October 8, 2014
Wouldn't you prefer a nice game of chess?

Later. Let's play Global Thermonuclear War.

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