In this first game of the series, you take on the role of the protagonist, Batman. You must explore the depths of the asylum to discover who is responsible for the chaotic situation and to restore order. You will have to do that in a very stealthy way, for if you are seen by any of the inmates, they will immediately recognize you and you will lose your stealth mission.

If you complete all the objectives of a given level, you will be able to proceed to the next level. Each level will present you with new objectives and you will have to complete them to progress.

The game will turn into a beat-em-up in the later levels and the enemies will start using different kinds of weapons. If you are not careful, you can be attacked and you will lose a life.