Survival games, there are different types of games like survival from apocalyptic zombies, to war or building a city survival.
Here are the best Android survival games you can play
Crashlands is one the most unique game you can find RPG, survival, action, and adventure in one game. You need to fight bad guys and build a base and save the world from evil
Last Day on Earth Survival is the most popular survival game on mobile. You need to gather resources, steal stuff, craft stuff, and fight with bad guys to survive.