Milon's Secret Castle (1988)
Game Boy · 1988
About this game
Milon, a child of the Kingdom of Hudson, must go on a quest to rescue Queen Eliza from an evil wizard who has taken over her castle as well as the musical instruments that the queen's subjects use to communicate with each other.
Milon must recover the stolen instruments and rescue the queen from the wizard.
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Armed only with a magical bubble-shooting ability, Milon makes his way through the rooms of the castle finding items and money that can help him progress.
This is a platformer that blends Mario-esqe action with puzzle-solving and exploration.
About Game Boy
The original Game Boy (1989) proved that handheld gaming didn't need cutting-edge graphics to succeed — its monochrome screen and legendary battery life, combined with Tetris as a pack-in, made it a cultural phenomenon. Game Boy cartridges are famously durable, so this remains one of the more accessible retro platforms to collect, though translucent color variants and complete-in-box copies with the original brick-sized manual add real value for condition-focused collectors.
Gamevaro tracks Milon's Secret Castle (1988) for Game Boy 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 Milon's Secret Castle (1988) 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 GB release dates back to 1988.
Market values by condition
PAL
NTSC-J
Recent sales
| Date | Type | Region | Price |
|---|---|---|---|
| 2026-07-16 | Sealed / New | NTSC-U | €438.36 |
| 2026-07-16 | Loose / Item only | NTSC-U | €14.90 |
| 2026-07-16 | Boxed (CIB) | NTSC-U | €115.37 |
| 2026-07-14 | Boxed (CIB) | NTSC-U | €115.19 |
| 2026-07-14 | Sealed / New | NTSC-U | €437.67 |
| 2026-07-14 | Loose / Item only | NTSC-U | €14.87 |
| 2026-07-13 | Loose / Item only | NTSC-U | €15.50 |
| 2026-07-13 | Sealed / New | NTSC-U | €437.44 |
| 2026-07-13 | Boxed (CIB) | NTSC-U | €115.21 |
| 2026-07-12 | Boxed (CIB) | NTSC-U | €115.21 |
| 2026-07-12 | Loose / Item only | NTSC-U | €15.50 |
| 2026-07-12 | Sealed / New | NTSC-U | €437.44 |
| 2026-07-10 | Boxed (CIB) | NTSC-U | €115.16 |
| 2026-07-10 | Sealed / New | NTSC-U | €437.25 |
| 2026-07-10 | Loose / Item only | NTSC-U | €15.50 |
| 2026-07-09 | Loose / Item only | NTSC-J | €16.61 |
| 2026-07-09 | Loose / Item only | PAL | €26.50 |
| 2026-07-08 | Loose / Item only | NTSC-U | €16.42 |
Market insights
Rarity & condition
Only a handful of market sales have been tracked for Milon's Secret Castle (1988), suggesting it doesn't trade hands very often — a sign of relative scarcity compared to more common Game Boy 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 Milon's Secret Castle (1988) worth?
Milon's Secret Castle (1988) for Game Boy is currently worth €26.50 loose. Prices are based on real sales and update regularly on Gamevaro.
Is Milon's Secret Castle (1988) rare?
Milon's Secret Castle (1988) has only a handful of tracked market sales, suggesting relative scarcity compared to more common Game Boy titles.
What's the difference between loose, CIB and sealed for Milon's Secret Castle (1988)?
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 Milon's Secret Castle (1988) worth more in PAL or NTSC?
The PAL version of Milon's Secret Castle (1988) is currently worth €26.50 loose, versus €14.90 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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