The open world zombie survival game is not even finished and its alpha version has hit a huge milestone.

The Developers and Publishers of the standalone version of DayZ, which is currently in Early Access on Steam, have announced that the game has shifted over 3 million copies.

In 13 months on Early Access the milestone sales number was reached yesterday, said Bohemia Interactive. The game was originally brought to the Steam platform on 16th December 2013.

Since the beginning of Early Access the game has seen 24 updates, which have included “core redesigns of some of the most significant features” including the game’s inventory, multiplayer, and map.

More improvements are planned for the game throughout 2015, which the developers outlined in a roadmap for the year over here. Such improvements and additions include basic vehicles, new UI, dynamic events, animal companions, and more.

The finished product is expected to be released some time in 2016.

Project lead on DayZ, David Durcak, ended the announcement with the following message:

We would like to say thank you to every single one of the three million players, that have joined us on the journey of making DayZ. You all have helped make DayZ the best open world, zombie survival game. This is an amazing achievement, and we are really looking forward to start sharing with you all of our game design improvements, anti-hack solutions and other optimizations we have been working on for a majority of the last year.”

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