Battle Room cards show the Overseer how to populate a room with monsters. Each card will have the following information:

1. Room name: The name of this room.

2. Room difficulty: Difficulty 0 rooms are the easiest, while difficulty 2 rooms are the most challenging.

3. Suppresses Box: Some rooms have restrictions on what types of shots and/or shot modifiers may be used. This effect is called suppression.

4. Quadrants: Four quadrants that group monsters by their respective level (1 to 4) for where they'll be placed on the playmat during the Setup Phase.