DEFCON
Cold War strategy matches of nuclear strikes and fragile alliances
Introversion Software · Released Sep 29, 2006
- Reviews
- Very Positive
- 87% of 4,333
- Recent reviews
- Not enough recent
- Playing now
- 5
- peak 24h 18
- Steam Deck
- Playable
- Last update
- 4 days ago
- Sep 18, 2026
Free demo available, 2 playing it now: get the demo.
Metacritic: 84/100 (critic reviews)
What is DEFCON?
A top-down, real-time strategy game set during a Cold War-era nuclear exchange. In solo or multiplayer matches, you position submarines, silos, and air defenses, then launch strikes against enemy populations while trying to protect your own. Multiplayer alliances can break down as attacks leave players open to retaliation.
For you if...
- +you enjoy tactical multiplayer with shifting alliances
- +you like making strategic choices under real-time pressure
Not for you if...
- −you prefer turn-based planning to real-time decisions
- −you avoid bleak depictions of mass civilian casualties
What players say
87% of 4,333 reviews are positive
Players praise the spare presentation, tense sound design, and strategic choices built on simple mechanics. Some find matches repetitive or solo opponents frustrating. Others report difficulty finding multiplayer games, interface scaling problems, and crashes.
Screenshots and trailer
DEFCON system requirements
As published by the developer.
Minimum
Windows XP, P3-600-Geforce 2, 128 Mb RAM, 60 Mb Hard Disk, Internet connection for multiplayer games
PC version details
DRM, required accounts, controller support and Steam features.
- DRM
- None declared on Steam
- Controller
- Keyboard and mouse
- Platforms
- Windows, macOS, Linux
- Achievements
- 22
- Steam features
- Family Sharing
Steam Deck: Playable
- Sometimes shows mouse, keyboard or non-Deck controller icons
- Some text entry requires manually opening the on-screen keyboard
- All functionality is accessible with the default controller configuration
- In-game text is legible on Steam Deck
- Default graphics settings perform well on Steam Deck
Multiplayer and co-op
Languages
Text only: English, French, German, Italian, Spanish - Spain.
Tags
- Tactical
- PvP
- Online Co-Op
- Co-op
- Singleplayer
- Strategy
- Cold War
- Replay Value
- Military
- Multiplayer
- 2D
- Top-Down
- Difficult
- Wargame
- RTS
- Immersive Sim
Recent updates
- Sep 18, 2026 · 1.70.3
- Sep 11, 2026 · Update Notes for 1.70.2
- Aug 24, 2026 · Defcon Update in Beta Testing
- Sep 8, 2024 · Update for Mac OS X 10.13 and later.
Games like DEFCON
