Dig tunnels underground and use an air pump to inflate and blow-up your enemies. You can also drop rocks on your foes. Dislodge two rocks and a bonus fruit or vegetable will appear in the center of the screen. A level ends when all the enemies have been destroyed.
The game has an amusing cast of characters. The two enemies are Pooka and Fygar. Pookas are animated red tomatoes with yellow sunglasses and Fygars are green dragons who can breathe fire. The player character is Dig Dug, a blue and white robot equipped with a shovel and a pump.
If you want to be extra greedy and get more points, eat all the dirt on the level. Leave only two enemies (because they will speed up, and three is too hard to handle). You don’t need to eat every little bit of dirt (you can leave long passageways to slow down the enemies). Also leave only Pookas, since the Fygars can burn you through the dirt. After level 12, the screens repeat in waves of 4. There are patterns for these levels. Also, after level 36, all the enemies will speed up. You will have to use new patterns for all the other levels again.
This game does NOT give extra man after 900,000. The score will flip over at 1,000,000. It is very easy to get a score of 999,990 by eating dirt for ten points per section.
At level 256 the game will start over at level 1 and get easy again, but you will never get another extra man.
Get either a Pooka or Fygar right on your tail, then pump him up but not so much that he explodes. Do this right near a rock — be warned that this is rather tricky. The idea is to loosen the rock when the enemy is almost fully inflated, get out of the way, then do a quick reverse and finish off the enemy at exactly the same time as he is crushed by the rock (avoiding the rock yourself, of course). This will confuse the game and all enemies on the current level will disappear leaving you to aimlessly dig tunnels through the dirt. You will not progress to the next level until you drop another rock.