Dig Dug represents a type of game that doesn’t really exist any more, at least in its original form: what I shall refer to from hereon as “Dirt and Boulders” games.
The idea of a Dirt and Boulders game is that you dig through a bunch of dirt while trying to accomplish something, attempting not to get squashed by inconveniently placed boulders, and occasionally trying to use said boulders to your advantage.
Dirt and Boulders games were big in the ’80s, with titles like Mr. Do!, Boulder Dash and numerous clones of both keeping people entertained both in arcades and at home. But 1982’s Dig Dug was the game that established the template for all subsequent Dirt and Boulders games to follow — and a template that modern offshoots of Dirt and Boulders games, such as Minecraft, Terraria and suchlike, have somewhat drifted away from in favour of crafting and exploration.