The Siege of Runedar is a cooperative game for 1 to 4 players. Players take on the role of dwarves charged with defending the walls of Runedar and the treasure they keep within. They will have to face orcs, goblins and trolls, fight in hand-to-hand combat against those who manage to get past the walls and shoot from a distance at those who try to enter. A deck-building system allows them to upgrade their weapons and tools, as they must hold off the raiders long enough to build a tunnel to escape the terrible siege they have been subjected to and get the treasure to safety.