The standalone version of DayZ launched on Steam Early Access yesterday, selling a mightily impressive 172,500 copies in just 24 hours.
Bohemia CEO Marek Spanel posted on his blog: "First day of Dayz (Alpha). Hours passed: 24. Copies sold: 172500. Survivors online: 142403. Bugs discovered: many. Work ahead: hard.
The first day sales figure followed news that the game had sold 88,000 copies in its first 12 hours.
If you want in on the action you'll need to pay £19.99 for the Steam Early Access, but don't expect to play a polished and fully working game.