This is a free prank game for entertainment purposes. It is designed to be a fun game for you and your friends, and it is based on a concept that has been proven by many people. The idea is that if you use a smartphone or a tablet, you can detect the presence of ghosts. This is done using the built-in sensors of the device, and the results are displayed on the screen.

If you use a mobile device, then you can also detect the presence of spirits - well, that is the concept behind the prank, anyway. This is done using a so-called "special module" that is built into the device. This module is supposed to detect the presence of ghosts and spirits. The results of the detection are displayed on the screen - which should hopefully scare off your friends.