Buy DEFCON PC

Where can you buy the cheapest DEFCON key for PC? Check and compare prices from 7 stores among 7 offers on XD.deals. The lowest DEFCON price on official stores is at Kinguin for £2.09 (-79%% off).

Steam:
Very Positive (3k)
Official
Unavailable
Buy in Official Store:
Unavailable
Buy in Keyshops:
-79%
£2.09
See price history

Keyshops (7)

DRM:
Kinguin
DEFCON Steam CD Key
Windows
+3
1d ago
DRM:
Steam
Kinguin
£10.28 £2.09
-79%
-8% with XD8DEALScopy
-8% with XD8DEALScopy
Eneba
DEFCON Steam Key GLOBAL
Windows
+3
3d ago
DRM:
Steam
Eneba
£10.28 £2.27
-77%
-10% with XDD10copy
-10% with XDD10copy
Gameseal
DEFCON (PC) GOG.com Key - GLOBAL
Windows
+3
4d ago
DRM:
GOG
Gameseal
£9.99 £2.94
-70%
-13% with SEAL13XDDcopy
-13% with SEAL13XDDcopy
Kinguin
DEFCON GOG CD Key
Windows
+3
1w ago
Kinguin
£10.23 £2.94
-71%
-8% with XD8DEALScopy
-8% with XD8DEALScopy
Eneba
DEFCON Gog.com Key GLOBAL
Windows
+3
2d ago
DRM:
GOG
Eneba
£10.28 £3.17
-69%
-10% with XDD10copy
-10% with XDD10copy
Yuplay
DEFCON
Windows
+3
1d ago
Yuplay
£9.06 £3.63
-59%
Kinguin
DEFCON Steam Gift
Windows
+3
8h ago
DRM:
Steam
Kinguin
£10.27 £7.97
-22%
-8% with XD8DEALScopy
-8% with XD8DEALScopy

About DEFCON

DEFCON - about the game
Hidden in an underground bunker during the Cold War, DEFCON delivers a strategy game of global thermonuclear war. Players position submarines, silos, and air defenses to wipe out enemy populations while shielding their own. Fragile alliances form and shatter amid betrayals, as each strike invites devastating retaliation in real-time death toll tracking. The minimalist military interface and tense soundscape amplify psychological pressure in multiplayer brinkmanship. Paranoia drives decisions to balance aggression and survival, ensuring total Armageddon hits others hardest. Strategy fans who relish high-stakes gambles and human cost simulation will find its depth compelling.

DEFCON, inspired by the 1983 cult classic Wargames, is a Cold War-era strategy game simulating global thermonuclear war. Hidden in an underground bunker, your goal is to annihilate enemy populations while protecting your own. Fragile alliances and betrayals shape the high-stakes gameplay, as every attack exposes you to retaliation. With its minimalist interface, DEFCON tracks death tolls in real-time, blending psychological tension with strategic depth. In nuclear Armageddon, everybody loses. You just have to lose the least.

Experience the chilling reality of global thermonuclear war in DEFCON. Position submarines, silos, and air defenses to engage in strategic nuclear exchanges. Every attack reveals your own vulnerabilities, making each decision a high-stakes gamble. The minimalist, military-style interface, and chilling soundscape heightens the tension.

DEFCON shines in multiplayer, where alliances are forged and broken in a heartbeat. Engage in brinkmanship, balancing aggression with self-preservation, to avoid triggering total nuclear war. The ultimate goal: ensure you lose the least, as paranoia and betrayal dominate every moment.

DEFCON doesn’t just simulate war — it emphasizes its devastating cost. Real-time death tolls track the human impact as cities are obliterated and the globe plunges into darkness.

DEFCON was the 3rd major game from acclaimed indie developer, Introversion Software, which then went onto to develop the BAFTA winning game, Prison Architect.

Introversion Software has been developing games since 2001, and stands behind acclaimed titles like Uplink, Darwinia, Multiwinia, Prison Architect, Scanner Sombre, and their latest release, The Last Starship. Introversion has garnered both critical and commercial success being recognised with multiple awards including the IGF grand prize for Darwinia and BAFTA for best persistent game (Prison Architect). They have sold more than 4M copies of their games worldwide.

Interface:
GermanEnglishSpanish - SpainFrenchItalian

Age rating

Unavailable
Steam:
Very Positive (3k)

Recommended:

Minimum:

  • 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

Recommended:

  • 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

Minimum:

  • Processor: 1.8 Ghz
  • Memory: 1Gb
  • Graphics: 64Mb of memory
  • Storage: 70Mb

Recommended:

  • Processor: 1.8 Ghz
  • Memory: 1Gb
  • Graphics: 64Mb of memory
  • Storage: 70Mb
Historical low
Price history from official stores
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Price history from keyshops
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FAQ

8 questions

Before you start looking for a cheap DEFCON key, check the essentials. Developed by Introversion Software. Published by Introversion Software. PC released date: 29 Sept 2006. Genres: Strategy, Indie. Categories: Multi-player, PvP, Online PvP, Family Sharing, Co-op, Single-player, Cross-Platform Multiplayer, Steam Achievements, LAN PvP, Online Co-op, LAN Co-op.

Q

Where to buy a cheap DEFCON Steam key?

Using our price comparison and verified discount codes, you can buy a DEFCON key for as low as £2.09. This deal is available at Kinguin and is among the cheapest offers on the market. All keys listed on XD.deals are delivered digitally and eligible for instant download after payment. Prices already include processing fees and applied promo codes, so you always see the lowest DEFCON price on PC. Check the DEFCON price history to buy at the best moment.

We don't have a current Steam Store price for DEFCON. The game may be temporarily unavailable or not yet listed on Steam.

Our price tracker covers both official retailers and key marketplaces, so you can find DEFCON on sale even outside seasonal promotions. We currently detect 7 active offers from official stores and keyshops. Check the table above, compare against the historical low, and set an alert so you never miss the next price drop.

Based on our data, DEFCON is not currently available on GeForce NOW. You will need to run it locally on your PC. Browse games available on GeForce NOW.

Yes. DEFCON has an official page on the Steam Store. You can also buy a DEFCON Steam key from third-party sellers. Our price comparison currently includes 3 offers with Steam DRM. Pick one to ensure your DEFCON download happens on Valve's platform.

Yes, with minor tweaks. DEFCON is Steam Deck Playable - it works after small adjustments like selecting a Proton version or using the touchscreen for tiny launcher text. You can play DEFCON on Steam Deck.

DEFCON does not appear to be available on PC Game Pass, EA Play, Ubisoft+ or any other PC subscription service at this time. Your only option is purchasing the game - use XD.deals to find the best price.

No - XD.deals is not a store. We are a price-comparison service that tracks the best DEFCON deals across official stores and verified keyshops. Click "Go to Store" next to any offer and you will be redirected to the retailer's website to complete your purchase.

Best prices for DEFCON

1 Kinguin Kinguin Keyshop
-79% £2.09
2 Eneba Eneba Keyshop
-77% £2.27
3 Gameseal Gameseal Keyshop
-70% £2.94
4 Yuplay Yuplay Keyshop
-59% £3.63

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