Dr. Chaos
Nintendo Entertainment System · 1987
About this game
Chaos was your typical mad scientist.
He owned an extensive mansion and spent his time experimenting within it on things that mankind was never meant to know.
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His latest invention is an Interdimensional Warpgate which allows access to worlds beyond our own.
As the doctor's younger brother, Michael, you arrive at Dr.Chaos' mansion one day to find the place crawling with strange mutant creatures.
To make matters worse, the mansion itself isn't looking too good.
Strange "holes" into other dimensions have opened up and made a mess of the architecture.
Furthermore, Dr.Chaos himself is missing.
The game takes place as a platform game where you must use various weapons (knife, pistol, machine pistol or grenade) to fight your way past mutants and into various rooms of the mansion.
Once in these rooms, the view changes to a first person maze... and you'll need to open various cabinets, doors and hit walls in special places to find access into a dimensional hole.
Once you enter the dimensional hole, the game once again becomes a platform game, where you will need to fight your way to the end of the level and defeat a boss monster of some sort to obtain a piece of the Warpgate.
Then you'll have to proceed BACK through the level and return to the mansion, where you'll explore to find the next dimensional hole.
About Nintendo Entertainment System
The Nintendo Entertainment System (1983 in Japan, 1985 in the West) revived the North American video game industry after the 1983 crash and established conventions — cartridges, licensing seals, save systems — that shaped the industry for decades. NES collecting is one of the most established retro markets: common titles remain cheap, but a well-known handful of low-print-run games (many from smaller third-party publishers) are among the most expensive video games in existence.
Gamevaro tracks Dr. Chaos for Nintendo Entertainment System 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 Dr. Chaos 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 NES release dates back to 1987.
Price history
Market values by condition
NTSC-U
NTSC-J
Recent sales
| Date | Type | Region | Price |
|---|---|---|---|
| 2026-08-10 | Graded New | NTSC-U | €284.10 |
| 2026-08-10 | Boxed (CIB) | NTSC-U | €47.68 |
| 2026-08-10 | Box Only | NTSC-U | €24.27 |
| 2026-08-10 | Manual Only | NTSC-U | €6.90 |
| 2026-08-10 | Sealed / New | NTSC-U | €253.68 |
| 2026-08-10 | Loose / Item only | NTSC-U | €11.68 |
| 2026-07-24 | Loose / Item only | NTSC-U | €13.16 |
| 2026-07-24 | Loose / Item only | NTSC-J | €13.16 |
| 2026-07-24 | Boxed (CIB) | NTSC-U | €52.66 |
| 2026-07-24 | Boxed (CIB) | NTSC-J | €52.66 |
| 2026-07-12 | Boxed (CIB) | NTSC-U | €48.24 |
| 2026-07-12 | Graded New | NTSC-U | €280.59 |
| 2026-07-12 | Loose / Item only | NTSC-U | €11.86 |
| 2026-07-12 | Sealed / New | NTSC-U | €262.47 |
| 2026-07-12 | Manual Only | NTSC-U | €6.96 |
| 2026-07-12 | Box Only | NTSC-U | €24.49 |
| 2026-07-10 | Loose / Item only | NTSC-U | €11.86 |
| 2026-07-10 | Manual Only | NTSC-U | €6.96 |
| 2026-07-10 | Boxed (CIB) | NTSC-U | €48.22 |
| 2026-07-10 | Sealed / New | NTSC-U | €262.35 |
| 2026-07-10 | Graded New | NTSC-U | €280.46 |
| 2026-07-10 | Box Only | NTSC-U | €24.48 |
| 2026-06-18 | Manual Only | NTSC-U | €6.87 |
| 2026-06-18 | Boxed (CIB) | NTSC-U | €47.44 |
| 2026-06-18 | Sealed / New | NTSC-U | €258.75 |
| 2026-06-18 | Loose / Item only | NTSC-U | €11.90 |
| 2026-06-18 | Box Only | NTSC-U | €24.14 |
| 2026-06-18 | Graded New | NTSC-U | €278.73 |
| 2026-06-17 | Graded New | NTSC-U | €278.84 |
| 2026-06-17 | Manual Only | NTSC-U | €6.87 |
Market insights
Rarity & condition
Dr. Chaos 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 Dr. Chaos worth?
Dr. Chaos for Nintendo Entertainment System is currently worth €11.68 loose, €47.68 complete in box, and €253.68 factory sealed. Prices are based on real sales and update regularly on Gamevaro.
Is Dr. Chaos rare?
Dr. Chaos 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 Dr. Chaos?
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 Dr. Chaos, loose is €11.68 and CIB is €47.68 — CIB commands a premium because original boxes and manuals are fragile and often don't survive.
Ratings & Reviews
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