Sea Monsters: A Prehistoric Adventure
PlayStation 2 · 2007
About this game
Sea Monsters is based on the National Geographic CGI documentary of the same name, where earth's underwater world from millions of years ago is portrayed as a dangerous environment with different kinds of predators keeping the ecosystem intact.
Players take command of six different prehistoric marine reptiles, each with their own skills and weaknesses.
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A large part is spent on exploration.
The creatures need to hunt prey, avoid or defeat foes, unlock hidden challenges and eventually find a way to escape the dangerous waters.
Creatures are controlled through the stylus to move them around.
They can dodge with a quick tap (DS) or a swing (Wii) and go into combat mode to lock on targets and attack.
Next to regular attacks, the creature can dodge an incoming attack and a bite icon appears.
Quickly select it and the next attack will be much stronger.
Some monsters have special abilities, activated by tapping the sonar icon in the bottom left corner when it becomes visible.
This allows them to swim stealthily, dig, break rocks or jump.
The creature's status is tracked through three parameters: health (hunger), stamina and oxygen.
Health and stamina can be replenished by eating small creatures, while oxygen requires a regular trip to the surface.
Creatures cannot dive deeper than fifty feet underwater.
The bottom screen shows a large sonar.
Dangerous monsters are bright red spots, food is green, collectible fossils are yellow (used to unlock new monsters) and portals are blue.
Some fossils can only be found by defeating monsters or by completing challenges.
Through their abilities, new monsters get access to new areas in the open sea, which serves as a hub.
There are also a few wildcard fossils to move on to unlock any monster.
The Wii and DS version are almost completely identical, but the Wii version also contains a multiplayer mode where players can race against friends in five different challenge zones.
About PlayStation 2
The PlayStation 2 (2000) is the best-selling game console in history, with a library exceeding 9,000 titles that spans everything from budget shovelware to genre-defining classics. That massive volume means PS2 collecting is accessible and affordable overall, but a handful of low-print-run RPGs and cult titles have become genuinely expensive — a common pattern once a console's original audience grows up with disposable income.
Gamevaro tracks Sea Monsters: A Prehistoric Adventure for PlayStation 2 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 Sea Monsters: A Prehistoric Adventure 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 PS2 release dates back to 2007.
Market values by condition
PAL
NTSC-U
Recent sales
| Date | Type | Region | Price |
|---|---|---|---|
| 2026-06-30 | Loose / Item only | NTSC-U | €6.59 |
| 2026-06-28 | Loose / Item only | PAL | €8.00 |
Market insights
Rarity & condition
Only a handful of market sales have been tracked for Sea Monsters: A Prehistoric Adventure, suggesting it doesn't trade hands very often — a sign of relative scarcity compared to more common PlayStation 2 titles.
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 Sea Monsters: A Prehistoric Adventure worth?
Sea Monsters: A Prehistoric Adventure for PlayStation 2 is currently worth €8.00 loose. Prices are based on real sales and update regularly on Gamevaro.
Is Sea Monsters: A Prehistoric Adventure rare?
Sea Monsters: A Prehistoric Adventure has only a handful of tracked market sales, suggesting relative scarcity compared to more common PlayStation 2 titles.
What's the difference between loose, CIB and sealed for Sea Monsters: A Prehistoric Adventure?
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.
Is Sea Monsters: A Prehistoric Adventure worth more in PAL or NTSC?
The PAL version of Sea Monsters: A Prehistoric Adventure is currently worth €8.00 loose, versus €6.59 for NTSC-U. Regional price differences usually come down to print run size and regional collector demand.
Ratings & Reviews
Also on other platforms
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