Subterranea (Atari 2600)

An incredibly accurate simulator of the hardships that diamond miners go through.

Developer Credits#

In Stage 3, shoot down the initial wave of enemies. When the crystal appears, shoot it 33 times to change it to the initials of Mark Klein, the game's programmer. Shooting it again will turn the crystal back to normal, and the initials won't appear again until the crystal has been shot an additional 256 times.

References#