From the announcement:
Zombicide is a collaborative game for 1 to 6 players developed by Guillotine Games and published by CoolMiniOrNot. A game lasts for 20min (beginner board) to 3 hours (expert board).
Each player controls from one (for 6 players) to four (solo game) "survivors", human beings in a zombie-infested town. In fact, "survivors" hastily change to "hunters" to smash zombies through and through. However, the team must constantly keep the balance between survival and slaughter: as the zombicide's going on, the "Danger level" is going up and infected are growing in numbers. Any misstep can turn to disaster.