Boulderdash
Another new game
idea... this time
from Data East/First Star. Some of us played it on Commodore Amiga or even C64...
Get a given amount of crystals while
digging through the level, always avoiding enemies and hazards like falling rocks. A rock
falling on an enemy gives u another crystal. Still too easy? Then take the timelimit in
account. You have to find the crystals and get outta the level though the exit door in
time. This game has some VEEEEEEEEEERY hard and nasty levels. Be sure u got nerves of
steel.
Its a classic.

There are (what i know) 2 earlier versions of Boulderdash out there, both older than 1990.