Recs.
Updated
Minecraft - Pocket Edition is an open world survival game that costs $6.99 and offers in app purchases that are $0.99 - $1.99 per item.
Gameplay consists of either a sandbox experience or a survival world, wherein sandbox allows users to freely build whatever they like with unlimited resources and survival adheres to an map where users mine materials that can then be used to build structures as well as weapons and armor that are necessary for survival of attacks from creatures in the world.
SpecsUpdate
Pros
Pro Difficult to put down
There is always one more thing that the player can get done before turning off the game. Building a structure and want to complete it, oh but you ran out of materials, well you will need to do down in the caves again. Oh you dies in the cave and need to go back before your items disappear, better get down there again. And so it goes, there is always one more thing to do before you are "done", which is the great appeal of the game, never wanting to stop playing.
Pro Actively being developed
There are updates to the game all the time, new features do get added at a good pace, which means that not only do bugs get fixed but that the game will constantly be growing as the platform grows with it, which allows more demanding features to be added with time.
Pro Good controller and button mapping support
For those that would like to play with a controller, support was added in July 2015. Anyone with a HID supported controller can easily connect through Bluetooth, and are able to then go into the games setting to map which buttons they want where if the standard setup needs tweaked. This customizability means anyone can adjust the controller to their liking now when using a HID controller.
Pro Players can customize their avatars via Skins
Minecraft for Android now offers player skins so users can customize their avatars look. While some of the skins are free, there are others that cost money through in app purchases offered as skin packs. All skin packs are $0.99 a piece.
Pro Functionality of the game can be changed and expanded with mods
Minecraft can be modded to bring extended functionality to the game. Using mods created by the community or mods created by themselves users are able to theme the game to their liking, such as theming the game to look like Grand Theft Auto or add extra crafting objects.