A free program for Android, by Geeky House.

MineTap is a free game that is very similar to an RPG. You can explore the world, complete quests, interact with NPCs, and fight monsters. It has tons of weapons and armor, so you can fight the monsters and complete the quests. It has to craft, so you can create your own armor and weapons. 

Explore the world: You can explore the world, and you can pick up all the resources. You can also find chests and other containers. There are lots of items that you can find, like weapons, armor, tools, etc.

Build your village in MineTap and defend yourself from zombies and monsters.