Seastalker
Commodore 64 · 1984
About this game
Seastalker is an interactive fiction computer game designed by Stu Galley and Jim Lawrence and published by Infocom in 1984.
Like most of Infocom's works, it was released simultaneously for several popular computer platforms of the time, such as the Commodore 64, Apple II, and IBM PC.
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The game was marketed as an introduction to interactive fiction for pre-teen players.
It is Infocom's twelfth game.
Galley and Lawrence later wrote Moonmist for Infocom.
The player's character is a young inventor and marine scientist.
A research facility called the Aquadome issues a call for help, indicating that the undersea structure is being attacked by a sea monster.
With helpful assistant Tip, the player must navigate to the Aquadome in the new untested two-person submarine Scimitar and investigate the problem.
But that isn't all... it looks like there may be a saboteur within the Aquadome as well.
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 Seastalker 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 Seastalker 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 1984.
Price history
Market values by condition
Recent sales
| Date | Type | Region | Price |
|---|---|---|---|
| 2026-07-16 | Boxed (CIB) | PAL | €39.84 |
| 2026-07-16 | Sealed / New | PAL | €70.14 |
| 2026-07-16 | Loose / Item only | PAL | €27.00 |
| 2026-07-14 | Boxed (CIB) | PAL | €39.78 |
| 2026-07-14 | Sealed / New | PAL | €70.03 |
| 2026-07-14 | Loose / Item only | PAL | €26.96 |
| 2026-07-13 | Sealed / New | PAL | €69.99 |
| 2026-07-13 | Loose / Item only | PAL | €26.95 |
| 2026-07-13 | Boxed (CIB) | PAL | €39.76 |
| 2026-07-12 | Loose / Item only | PAL | €26.95 |
| 2026-07-12 | Boxed (CIB) | PAL | €39.64 |
| 2026-07-12 | Sealed / New | PAL | €69.99 |
| 2026-07-10 | Boxed (CIB) | PAL | €39.62 |
| 2026-07-10 | Loose / Item only | PAL | €26.93 |
| 2026-07-10 | Sealed / New | PAL | €69.96 |
| 2026-07-09 | Sealed / New | PAL | €70.15 |
| 2026-07-09 | Boxed (CIB) | PAL | €39.73 |
| 2026-07-09 | Loose / Item only | PAL | €27.01 |
| 2026-07-08 | Boxed (CIB) | PAL | €39.63 |
| 2026-07-08 | Sealed / New | PAL | €69.97 |
| 2026-07-08 | Loose / Item only | PAL | €26.94 |
| 2026-07-06 | Sealed / New | PAL | €69.88 |
| 2026-07-06 | Loose / Item only | PAL | €26.90 |
| 2026-07-06 | Boxed (CIB) | PAL | €39.58 |
| 2026-07-04 | Loose / Item only | PAL | €26.90 |
| 2026-07-04 | Boxed (CIB) | PAL | €39.58 |
| 2026-07-04 | Sealed / New | PAL | €69.88 |
| 2026-06-30 | Boxed (CIB) | PAL | €39.49 |
| 2026-06-30 | Sealed / New | PAL | €70.14 |
| 2026-06-30 | Loose / Item only | PAL | €27.00 |
Market insights
Rarity & condition
Seastalker has a steady sales history on the tracked marketplaces, meaning enough copies circulate to establish a reliable market price.
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 Seastalker worth?
Seastalker for Commodore 64 is currently worth €27.00 loose, €39.84 complete in box, and €70.14 factory sealed. Prices are based on real sales and update regularly on Gamevaro.
Is Seastalker rare?
Seastalker has a steady sales history on the tracked marketplaces, meaning it trades hands regularly and isn't considered particularly rare.
What's the difference between loose, CIB and sealed for Seastalker?
Loose means cartridge or disc only, CIB (complete in box) includes the original box and manual, and sealed means factory-sealed and never opened. For Seastalker, loose is €27.00 and CIB is €39.84 — CIB commands a premium because original boxes and manuals are fragile and often don't survive.
Ratings & Reviews
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