Another game that I love to play that is for Android is Zombie Castaways. As with any other game I play, I use an Android Emulator to play on my laptop and I prefer it for games like this because I can get a bigger view of the scene and it makes it easier to plan my moves. 

Zombie Castaways has a goal of a Zombie trying to become human. To achieve the goal you travel to various islands and complete tasks and they can all be done without purchasing anything with real money which is nice. You have to wait for some tasks to finish though and that can be frustrating but once you're further along into the game there are a lot more things to do in the meantime so it isn't as bad.