State of Decay contains elements of third person combat and simulation (building base and outposts). The player is in charge of a small group of survivors and can either follow the storyline or perform tasks that ensure their community's survival. The game world is 16 square kilometers,[ 8 square kilometers of which is playable.
The player can choose from several locations to build a base, then reinforce and improve it with various facilities like watch towers, gardens, sleeping quarters, kitchens, workshops, medical bays, etc. to help keep survivors safe and healthy. Part of the game is balancing the use of resources: food, medicine, ammo, and construction materials. They can be obtained by scavenging, trading with NPCs, only food can be grown at the base.
This article uses material from the Wikipedia article State of Decay, https://en.wikipedia.org/wiki/State_of_Decay_(video_game) which is released under the Creative Commons Attribution-Share-Alike License 3.0, https://creativecommons.org/licenses/by-sa/3.0/.