Dig Dug is a maze video game where the player controls the titular protagonist, Dig Dug (Taizo Hori), to eliminate each stage's enemies: Pookas, red and spherical beings that wear comically large goggles; and the draconic Fygars, which breathe fire. Dig Dug can use an air pump to inflate them until they explode or crush them to death under falling rocks. When the air pump is activated, Dig Dug will stop moving and throw the end of the air pump forwards, where it may catch onto an enemy. If an enemy is hit, they are frozen in place and the player can repeatedly press the air pump's button to inflate them. If no action is taken for a while or the player moves, the air pump disconnects and the action is cancelled, but the enemy will begin to deflate and will be stunned until fully deflated. Rocks are unable to be dug through but will fall after a short period of time after the tile directly beneath them is removed by Dig Dug and he moves from the position, though he can still be crushed. Falling rocks are destroyed once they land on a tile. Bonus points are awarded for squashing multiple enemies with a single rock and dropping any pair of rocks in a stage yields a bonus item, which can be eaten for points, and increases its point value the further the player gets in the game. Once all the enemies have been defeated, Dig Dug progresses to the next stage.[8]