Try to get to the bottom of a stack of blocks in MR. DRILLER. Dig left, right, up, or down as you fight your way to the target depth. However, you must keep a constant eye on the diminishing air gauge, or else it's curtains for you. Luckily, you can collect air capsules that will replenish 20% of your air supply. Will you be able to make it to the bottom of the stack? Give it a try with MR. DRILLER for the Game Boy Color.