Too Many Bones: Unbreakable ups the stakes with the addition of the Lava Battle Mat and new Break-type baddies. Made up of 16 chips that slot into the neoprene play surface, the Lava Battle Mat is a dynamic battlefield where the ground beneath your adventurers feet can change at any time, turning from solid ground into molten lava in an instant. This deadly change is controlled by Unbreakables unique encounters and the Break-type baddies, who have a variety of new powers that specifically interact with the lava chips.