DayZ sells 800,000 copies in a month

Zombie-survival title DayZ has tasted even more success after it was revealed the game has sold more than 800,000 copies in under a month.

That's just for the alpha version, with the game not even expected to reach beta for another year.

Creator Dean Hall revealed the figures on Reddit, and he says they come as a total surprise.

"We {Bohemia and I) had very ambitious plans for 2014 already, however this amount of sales was completely unexpected," he wrote.

"Honestly, 250k within a quarter was what I would have considered a success. So to move nearly 800,000 in under a month is crazy.

"We'll be finalising our roadmap in January, but it is safe to say that this kind of result will be having a very positive effect on that roadmap."

DayZ shifted 172,500 copies within 24 hours of being available.