SAS: Zombie Assault 4

SAS: Zombie Assault 4, also referred to as SAS 4, will be the fourth full game in the main SAS: Zombie Assault series.

Recently, blogs on Ninja Kiwi have slowly been releasing information of Zombie Assault 4, mainly via images.

Build Progress
Zombie Assault 4 is currently in early development, as said on a NK blog on January 22nd, 2014. On a blog from February 28th, an image of the apparent title screen was put on Imgur, and put on the blog as a 'hidden' link in the response to the question "Is it possible to share some spoilers for new games?".

Another 'hidden' link to a file on Imgur was included in a blog from March 14th, 2014 in response to a question. This time it was a GIF animation of a few seconds of gameplay - a soldier (the player, apparently) shooting zombies inside a building, while a timer above counts down. In it, two Zombies types are named: the Fetid Shambler and Stalker. It can also be seen that turrets, premium ammo, and Grenades and Cryo Grenades will be included.

Additionally on March 14th, the 'Official Trailer' was put on YouTube, revealing a lot more information: the game is set in the year 3119, and takes place at a 'Federation Colony', overrun by a deadly virus. There are three character classes with unique skills, 90+ weapons with 11 argumentations, and 70+ body armor pieces. 4-player co-op multiplayer is said to be included. Among the enemies seen, there is apparently mechanized enemies, and, noticeably, what appears to be the Ruin, of notoriety.