Dig Dug

Dig Dug is an arcade game for 1-2 players, in which you'll have to dig through the earth with your shovel. In doing so, you'll be hindered by two monsters called Pooka and Fygar, which will constantly chase you. The only weapon you'll have with you is an air pump, with which you'll be able to inflate the monsters to the point where they explode. (If you start blowing them up and then stop, the monsters will turn back into their normal selves.) There are also rocks scattered all over the place that you can use to crush them. If the monsters don't find you for several seconds, they eventually turn into ghosts that can walk through the earth. They are invincible and cannot be killed. From time to time, vegetables appear in the middle that you can exchange for points.