Before entering a level of the dungeon, the player has to build it. To do that, he has access to pieces that represent the rooms. The player has to place the pieces in a map grid to link the entrance with the exit of the level.
Distributed over the map, thare are events that become accesible when the player places a piece over them. Some are showed during the level creation, but other are hidden. When the player finds them during his run through the dungeon, he gets bonus to his life, extra rewards or specific challenges.
When the map pieces are linked in a specific way, sinergies are generated. These sinergies increase the difficulty of the linked rooms and in exchange, they offer better rewards and temporary stat increments.