Mercenary Force
Game Boy · 1990
About this game
Mercenary Force is an unconventional shoot'em up set in Japan's Edo period and inspired by Japanese history and mythology.
When Japan is invaded by the minions of a dark lord, the shogun sets out to hire the best warriors in the land to combat the enemy.
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Players start with 5000 yen and must begin by hiring their mercenaries.
The team has four slots and can be recruited from five different character types (servant, ninja, monk, samurai and mystic) in any combination (including more than one of any character).
The characters differ in hiring price, starting health, weapons (amount of projectiles, speed and direction), and their special attack.
The game consists of six levels, seen from an angled top-down/side-view perspective, with the screen scrolling automatically to the right.
The mercenaries must shoot hordes of enemies to get to the next level, including several bosses.
The mercenaries can change their formation between four different options: a vertical line, a diamond shape, a square shape and a horizontal arrowhead formation.
It is also possible to switch the character in the lead position, leading to a large variety of tactical options.
The hit points of each team member are counted individually, so if one is killed the remaining ones can fight on.
Besides their standard weapon, each character also has a special suicide attack, triggered by pressing both buttons at the same time.
These are usually highly devastating attacks, but the monk's power actually allows the group to skip ahead through a large part of the level.
Killed enemies drop coins of 10 yen in value that disappear after a short while if not picked up.
The money reserve is used in a matter of ways: between stages, new recruits can be hired to replace fallen fighters.
There are also various buildings in the levels that allow the spending of money.
Cafes offer various items that restore or increase health and, in some levels, can change the character class of the team leader.
There is a fortune-rea
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 Mercenary Force 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 Mercenary Force 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 1990.
Price history
Market values by condition
PAL
NTSC-U
1 collector on Gamevaro has this game.
Recent sales
| Date | Type | Region | Price |
|---|---|---|---|
| 2026-07-17 | Item only | PAL | €26.36 |
| 2026-07-17 | Item only | NTSC-U | €20.34 |
| 2026-07-17 | Boxed (CIB) | NTSC-J | €156.09 |
| 2026-07-17 | Complete in Box | NTSC-U | €156.09 |
| 2026-07-17 | Loose / Item only | NTSC-J | €20.34 |
| 2026-07-16 | Manual Only | NTSC-U | €8.76 |
| 2026-07-16 | Box Only | NTSC-U | €35.25 |
| 2026-07-16 | Boxed (CIB) | NTSC-J | €156.93 |
| 2026-07-16 | Complete in Box | NTSC-U | €156.93 |
| 2026-07-16 | New (sealed) | NTSC-U | €179.73 |
| 2026-07-16 | Graded New | NTSC-U | €254.16 |
| 2026-07-16 | Item only | NTSC-U | €20.47 |
| 2026-07-16 | Item only | NTSC-U | €19.58 |
| 2026-07-16 | Loose / Item only | NTSC-J | €20.47 |
| 2026-07-16 | Item only | PAL | €26.31 |
| 2026-07-16 | Complete in Box | NTSC-U | €78.26 |
| 2026-07-15 | Boxed (CIB) | NTSC-J | €156.94 |
| 2026-07-15 | Complete in Box | NTSC-U | €156.94 |
| 2026-07-15 | Item only | NTSC-U | €20.42 |
| 2026-07-15 | Loose / Item only | NTSC-J | €20.42 |
| 2026-07-15 | Item only | PAL | €26.38 |
| 2026-07-14 | Manual Only | NTSC-U | €8.74 |
| 2026-07-14 | Complete in Box | NTSC-U | €78.13 |
| 2026-07-14 | Graded New | NTSC-U | €253.76 |
| 2026-07-14 | Boxed (CIB) | NTSC-J | €156.68 |
| 2026-07-14 | Item only | PAL | €26.29 |
| 2026-07-14 | Loose / Item only | NTSC-J | €20.28 |
| 2026-07-14 | Complete in Box | NTSC-U | €156.68 |
| 2026-07-14 | Item only | NTSC-U | €20.28 |
| 2026-07-14 | New (sealed) | NTSC-U | €179.45 |
Market insights
Rarity & condition
Mercenary Force 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 Mercenary Force worth?
Mercenary Force for Game Boy is currently worth €26.36 loose, €51.88 complete in box, and €136.44 factory sealed. Prices are based on real sales and update regularly on Gamevaro.
Is Mercenary Force rare?
Mercenary Force 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 Mercenary Force?
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 Mercenary Force, loose is €26.36 and CIB is €51.88 — CIB commands a premium because original boxes and manuals are fragile and often don't survive.
Is Mercenary Force worth more in PAL or NTSC?
The PAL version of Mercenary Force is currently worth €26.36 loose, versus €20.34 for NTSC-U. Regional price differences usually come down to print run size and regional collector demand.
Ratings & Reviews
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