In this game the players are pilots of fire fighting planes trying to quench a bush fire spreading around an active volcano. The main priority is not only to extinguish local fires but also to isolate greater fire areas from the volcano so that the (neutral) ground units are able to extinguish it. This is a tactical game without any random influence apart from setup. All information is open. The initial bush fire is created by placing hex tiles on a table and defining which of those tiles is the active volcano. After that, everything depends on the players, who will be forced to cooperate from time to time in order to win in the end. This game uses the components of Feurio!, but is a stand-alone game. A player owning a copy of Feurio! can start playing immediately - no additional materials are necessary. The end situation of a basic Feurio! game can be used as the starting point of a Vulkan! game, because in Feurio! the hex tiles are placed onto the table, while in Vulkan! the tiles are picked from the table to gather points. The game also includes a solitaire variant and a cooperative variant.