Pookagame is an arcade machine made by Namco in Japan in 1985. It ran on the Namco Galaga hardware. Dig Dug was later published outisde of Japan by Atari, Inc.
The objective of Pookagame is to destroy ground-dwelling monsters by either inflating them with air until they pop, or by dropping rocks on them. There are two kinds of enemies in the game, Pookas and Fygars.
The playable character in the game is Dig Dug, a man dressed in white and blue with a red drill who can dig tunnels through the ground. Dig Dug can be killed if he runs into a Pooka or Fygar, burned by a Fygar's fire breath, or crushed by a rock.
The enemies normally crawl through the tunnels, but can crawl through the dirt, which makes them invisible except for their eyes. The last enemy in a round will try to escape off the top left of the screen. If it succeeds, points are lost.
After the player drops two rocks, fruits and vegetables and other edible bonus items appear in the center of the play field, and can be collected for points if the player is able to reach them before they disappear. These edible bonus items will appear even if the rocks fail to crush any enemies. In the original arcade version, the most points attainable from a single bonus fruit (or vegetable) is 8000 from the pineapple, which appears in every round of the game from the seventeenth round onwards.