<P> The game's title is a reference to an important event that occurs every seventh day of in - game time, whereby hordes of zombies attack the player's current location en masse - unless sufficient preparation has been made and defences constructed, the player will quickly be overwhelmed . </P> <P> Multiplayer is available through player - hosted servers and enables multiple players to interact and communicate with each other on a single world . Interactions can be cooperative or hostile depending on the used server options . Players can run their own servers or use a hosting provider . Single player worlds have local area network support, allowing players to join worlds on locally interconnected computers without a server setup . Players are also able to provide Wide Area Network support via single player worlds . 7 Days to Die servers can run on both consoles, Windows and Linux . There are two supported game modes for multiplayer: Survival (both randomly generated and standard) and Creative . </P> <P> The Windows alpha version of the game was released on August 16, 2013, for people who pre-ordered the game on either Kickstarter or PayPal . As of August 11, 2013, development of the game is ongoing with a Kickstarter campaign ending on August 15 . The estimated release date was May 2014 for Windows PC; Macintosh and Linux versions were planned for later in the year . The game has also been greenlit on Steam after 23 days getting over 75,000 yes votes, 8,340 followers, and 8,700 favorites . It was number one on Steam Greenlight, after only 16 days with over 56,000 votes . The Mac version was released on September 13, 2013 at the same time as update Alpha 1.1 . </P> <P> 7 Days To Die was released to the public on Alpha 1.0 . Only users who had backed the game via the Kickstarter Campaign or who bought it via PayPal had access to the Alpha until Alpha 5.0 which was released on Steam as an Early Access game on 13 December 2013 . </P>

When does the night end in 7 days to die