Mr. Driller's world has been covered with mysterious blocks. Armed with only a mighty drill, you'll have to dig your way down to safety before his air supply runs out! Mr. Driller is a real-time puzzle game that relies solely on quick-thinking and a bit of planning. The gameplay is a combination of Tetris and Boulder Dash: You have to drill down through multi-colored blocks to reach the bottom while avoiding the consequences of reckless drilling; blocks left without a foundation will drop down after a while, potentially crushing Mr. Driller . As the hero's air supply is depleted with time, the player must regularly grab oxygen pick-ups.
The game requires regular planning and strategy to overcome obstacles and avoid running out of air. Certain blocks are particularly troublesome, such as "X-Blocks", which take a few tries to drill through and can deal significant damage to Mr. Driller 's health if destroyed. If four or more X-Blocks come into contact with each other, they vanish and leave behind a small blue creature "Chisokojin", which rewards the player with 765 points when picked up.
The game features two challenging scenarios: the "2500ft" challenge, with five levels, and the "5000ft" challenge, with ten levels. Players must navigate through increasingly difficult levels to reach safety and claim victory.