Recs.
Updated
Minecraft - Pocket Edition is an indie sandbox video game based around building structures in a voxel based world. Contained within are survival and a free play build modes. The game can be played offline and with others over Wi-Fi.
SpecsUpdate
Pros
Pro Good controller and button mapping support allows the game to be easily played with many different controllers
For those who would like to play with a controller, support was added in July 2015. Anyone with a HID supported controller can easily connect through Bluetooth. They can then go into the games settings to map which buttons they want to use. This customizability means that you can now adjust the controller to your liking when using an HID controller.
Pro Addictive gameplay makes the title 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 wanting to complete it - oh but you ran out of materials. Well you will therefore need to go down into the caves again. Oh you died in a cave and need to go back before your items disappear - better get down there again. And so it continues. There is always one more thing to do before you are "done", which is the underlying appeal of the game, never wanting to stop playing.
Pro Plenty of fun customizable skins for those interested in customizing their look
Minecraft for Android offers player skins, so users can customize their avatar's 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 Great freedom of expression thanks to the sandbox gameplay
In Minecraft you can really do whatever you want. If exploring different landscapes is your thing, creative mode lets you do that. Building castles or villages, or even sculptures, computers (complete with redstone logic), or unique builds can be done such as roller coasters or replicas of objects like the Enterprise from Star Trek.
For more combat focused gameplay, enter survivor mode and you can fight monsters, gather resources, craft weapons, build traps and farms and much more.
Pro Completely new experience with each generated world keeps the game fresh
Each new world a player starts is randomly generated, making for a different experience every time a new world is started. There are 38 biomes - snowy, cold, medium/lush, dry/warm, and neutral biomes, each with numerous sub-biomes (such as mountainous, rivers, forested, swamp, beach and more). These biomes each have their own set of blocks and configurations, and each frozen river biome will be different from the next frozen fiver biome you see.