Block Fortress is Minecraft meets tower defense meets first person shooter, all squeezed down into a mobile game. Build a base in the middle of a blocky wilderness, place turrets and towers and power supplies to fortify your position, then send in the waves of enemies. Once combat begins, you shift from building mode to combat mode, taking a gun into battle and watching over your fort by blasting enemies by hand. It's incredibly exciting and also deeply rooted in upgrades and tactics, making it the sort of game you can play for months without truly mastering.

We all know Minecraft by now, the massively cool 3D sandbox creativity game that lets you explore, craft, and build anything you like. Then there's Terraria, a game that took the same formula and flattened it into a 2D sidescrolling game, adding combat and some other nice extras in the process. Both titles have spawned similar games on numerous platforms, but so far the mobile realm hasn't been a fertile ground for the sandbox genre. Until Junk Jack came along. This 2D pixel-gorgeous game takes the all-too-familiar crafting, digging, and exploration formula to your iPhone, iPod Touch, and iPad, bringing with it an entire world of possibilities.