Zork: The Undiscovered Underground
Commodore 64 · 1997
About this game
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.
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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.
The player must demask the Grue vendor to gain the four candy bars and place the relevant objects in the Mud Forum on the appropriate corresponding floor symbols.
This unleashes a mutant chase reminiscent of Planetfall where the adventurer stays one step ahead of the Rat Ants because of the shrewdly placed candy bars.
However, the escape comes at the cost of unleashing a Rat Ant epidemic onto the empire and forces the adventurer to flee from the wrath of the Grand Inquisitor.
About Commodore 64
Released in 1982, the Commodore 64 is the best-selling home computer model of all time, with an enormous software library spanning games, productivity tools, and everything in between. C64 game collecting centers on cassette tapes and floppy disks in their original packaging — physical media that's inherently fragile, so complete, working copies from the era are increasingly prized by retro computing collectors.
Gamevaro tracks Zork: The Undiscovered Underground for Commodore 64 with separate market values for loose, complete-in-box (CIB) and factory-sealed copies, sourced from real eBay sales. Prices also vary by region — PAL, NTSC-U and NTSC-J releases of the same game often sell for different amounts due to print run sizes and regional collector demand.
Adding Zork: The Undiscovered Underground to a Gamevaro collection takes seconds — search by title or scan the box barcode, and the app fills in cover art, release details and current pricing automatically. This C64 release dates back to 1997.
Market values by condition
No price data available yet.
Rarity & condition
No market sales have been tracked yet for Zork: The Undiscovered Underground — this could mean it rarely changes hands, or simply that Gamevaro hasn't recorded a sale for it yet. Be the first to add it to your collection.
Complete-in-box (CIB) copies typically command a premium over loose cartridges/discs because the original box and manual are more fragile and get discarded or damaged over time — fewer complete sets survive.
Frequently asked questions
How much is Zork: The Undiscovered Underground worth?
Gamevaro hasn't tracked a market sale for Zork: The Undiscovered Underground (Commodore 64) yet, so no current value is available. Prices are sourced from real marketplace sales, and this page will update automatically once sales data comes in.
Is Zork: The Undiscovered Underground rare?
No market sales have been tracked yet for Zork: The Undiscovered Underground, which could mean it rarely changes hands or that Gamevaro simply hasn't recorded a sale for it yet.
What's the difference between loose, CIB and sealed for Zork: The Undiscovered Underground?
Loose means cartridge or disc only, CIB (complete in box) includes the original box and manual, and sealed means factory-sealed and never opened. These are tracked as separate market values because the price gap between them can be significant, especially for older releases.
Ratings & Reviews
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