A Thief's Journey is a puzzle game based on a story. The story of the game is about a thief who gets caught while trying to steal a valuable object from a museum. He gets locked up in the museum and has to find a way to escape from the building.

In order to escape from the building, the thief has to find a way to open the doors, which are locked with a combination of keys. The keys are hidden in the room and can be found by searching the room.

The search for the keys is done in a manner such that it is not easily observed by the guards.