Piggy the Lost Book is a free arcade game developed by House of Horror games for Android devices. The game is set in an old dark metro in the city where you and your friends are lost. The objective of the game is to escape the metro by solving puzzles and finding objects while avoiding a scary robot monster.

The game features survival gameplay with a horror atmosphere, easy controls, and works on older phones. The game is designed to test your survival skills and keep you on the edge of your seat.

As you navigate through the old metro, you will hear scary noises and must escape the springlock monster that is chasing you. You must unlock doors and fix problems quickly to ensure your survival.

Overall, Piggy the Lost Book is a thrilling and scary adventure game that will keep you entertained for hours. Download it now and see if you have what it takes to survive.