Zork: The Undiscovered Underground

The purpose of the game is to explore and emerge successfully from the Undiscovered Underground. The player begins only with a low-quality Lantern and plastic imitation sword, a parody of the starting items from Zorks I, II and III.

Upon entering the Undiscovered Underground, the adventurer is trapped by a freak avalanche. The only way to escape is to release the mutant Rat Ants (an echo from Starcross) and to direct them to the avalanche, which they dispatch in a manner reminiscent of Aesop's Fables.