The character (the lost boy) will have to move around the map, collecting keys and using them to unlock doors. There are two keys and two doors; one key leads to the correct door and the other key leads to a trap door. When the character comes close to the door, they can proceed to the next level of the game. When you lose, you restart the game in a different map part of the map.
The objective of the game is to collect all of the keys.
While searching for the right door, try your best to survive from "certain" entities.