Lobbies v1.5.4 · Changelog · Made by a gamer for gamers

Released September 29, 2006 · Introversion Software
You play the role of a military commander hidden deep within an underground bunker. Your mission - to successfully exterminate your enemy's civilian population whilst disabling their ability to attack your own. Start by launching your battleships, submarines, and bombers in order to decimate your opponent's defences. Scramble together your alliances, but remember only one can stand victorious. Prepare your pre-emptive strike before one of your supposed allies get the same idea. Choose the perfect moment for betrayal, obliterating your opponents with an apocalyptic thermonuclear barrage, but get it wrong and their devastating counter attack will bring you to your knees!
Steam · 4.4K reviews · 87% positive
IGDB · out of 100
The DEFCON Lobby
Classic strategy game DEFCON from Introversion Software gets a free 20th Anniversary Edition upgrade
Introversion Software released a major upgrade for their 2006 classic DEFCON, a free 20th Anniversary Edition upgrade for all players. Read the full article here: https://www.gamingonlinux.com/2026/09/classic-strategy-game-defcon-from-introversion-software-gets-a-free-20th-anniversary-edition-upgra…
20th Anniversary Edition
Twenty years ago on this day, the 29th September 2006, Introversion Software released their third game DEFCON, and our lives were never the same again. What started as a 24 hour game jam (and love letter to WARGAMES) rapidly turned into our most successful game yet, as tens of thousands of players…
1.70.3
Bug Fixes The renderer fallback now also covers the window being recreated, such as a resolution or renderer change, rather than only Defcon starting up. HDR for Metal (MacOS) and Vulkan (Windows, Linux) no longer creates corrupted and garbled screenshots. World messages such as launch alerts no lo…
via Steam