State of Survival, or SoS, is a real-time strategy game with a zombie apocalypse concept. Despite its design, SoS is not an isometric TPS; the bundled mini-game is a brief action game, but this is not an FPS in which you aim and kill zombies in an open environment. State of Survival is a mobile strategy game in which players establish a community, acquire resources, and train warriors to battle the zombie horde, all while discovering the plot.