Deep Digg is an addicting classic game, there is hard mode and easy mode. In the hard mode, the air supply decreases over time, each rock dig consumes 20% air. In the easy mode, the air only decreases when you dig, one color ore consumes 1% air, one rock 5% air. Use the arrow keys to move the character, press the space bar to dig rocks, rocks with same color can be eliminated, don’t let rocks fall down above you or you will die.