Mr. Driller

Mr. Driller is a 1999 puzzle video game developed and published by Namco for arcades. It was later ported to various home and portable systems. Controlling Susumu Hori, the titular "Mr. Driller", the player must dig their way to the bottom of the screen by destroying colored blocks that litter the playfield. Blocks will be cleared if four or more are touching each other, which can be used to cause chain reactions. Susumu has a constantly-depleting oxygen meter that can be refilled by collecting air capsules found throughout stages.