Granny is a popular horror game, the main antagonist of the game is an old woman. Gameplay is mostly about hiding and running away from Granny, but if you're lucky enough to find a weapon, you might try to kill it. The monster is faster than you, but you can use the shortcuts that are all the way around. The main objective is to find a way out of the house, by collecting the right keys and opening closed doors.
How to install maps:
Download .mcworld file below
Open file using any file manager to import it into Minecraft PE
Open Minecraft Pocket Edition and look for the map among your worlds