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 Plenty of expansive mods available if the core game gets too boring
Minecraft can be modded in order to bring extended functionality to the game. Using mods created by the community, users are able to theme the game to their liking, such as theming the game to look like Grand Theft Auto or adding extra crafting objects.
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.
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 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.
Cons
Con Not as deep as other versions
Minecraft - Pocket Edition does not have as much content as other versions due to the app needing a limited size for mobile devices and their small storage. This means there is missing content in the mobile version over the PC or console versions. It is getting comparative better, but still is lacking due to the platform.