According to Hall, the brisk sales were more than he expected and will have an effect on the development team's plans.
"We (Bohemia and I) had very ambitious plans for 2014 already, however this amount of sales was completely unexpected," Hall 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 finalizing our roadmap in mid January, but it is safe to say that this kind of result will be having a very positive effect on that roadmap."
Bohemia CEO Marek Spanel announced last month that the studio sold 172,500 copies of DayZ in its first 24 hours, which amounted to more than $5.17 million in launch-day sales.
The stand-alone, alpha version of DayZ was released for $29.99 last month through Bohemia's own store and Steam Early Access. For more on the game and what developers can learn from DayZ's path to release, be sure to read our recent opinion piece.