Final Fantasy

Kingdom Hearts: Chain of Memories / KHCoM

Final Fantasy XII Ashe
Room Synthesis Explanation
When entering a new room you a prompted with the Room Synthesis screen by striking the door, you have to use your Map Cards to match the Criteria of the room. All cards have a value of 0-9, 1 being the worst and 9 the best. 0 is a wildcard that can act as any number from 0-9.
Different cards have different effects on a room such as Feeble Darkness makes enemies with weak cards appear, Moogle Room makes the Moogle Shop appear and Moment's Reprieve makes a room with a save crystal appear. There are many more that you will discover as you journey through Castle Oblivion.