A Metal Gear built for the Game Boy Color. The team treated it as seriously as the full console games.
Metal Gear: Ghost Babel was developed by Konami Computer Entertainment Japan under Shinta Nojiri and released for Game Boy Color in April 2000. It operated as a top-down stealth game mechanically consistent with the MSX2 and NES Metal Gear titles, running on a handheld with four face buttons and a small screen. The game offered a full narrative, multiple codec conversations, a VR Missions mode with hundreds of stages, and optional difficulty settings that changed the story context. It is widely considered the finest Metal Gear title on a handheld platform. Hideo Kojima has described the game as one he was proud of despite not directing it. It remains a collector's item, sought for both its gameplay and its place in the Metal Gear timeline.
— inspired by Hideo Kojima
About this game
Metal Gear: Ghost Babel is a 2000 Game Boy Color original — not a handheld port of the PlayStation hit, but a standalone stealth-action game with its own story and alternate timeline. Solid Snake infiltrates Galuade (formerly Outer Heaven) in Central Africa to stop a stolen Metal Gear prototype codenamed Gander. The game returns to the overhead 2D perspective of the early MSX2 Metal Gear titles while incorporating mechanics inspired by the PlayStation era, including eight-directional movement and wall-flattening stealth.
Key Features
13-stage structure with top-down 2D stealth gameplay. Eight-directional movement and wall-flattening mechanics adapted from the PlayStation Metal Gear Solid. Codec communication system with full story dialogue. An alternate-continuity story completely separate from the 1998 PlayStation game.
Gallery
The Story Behind
Released in April 2000 during the Game Boy Color's twilight period — just months before the Game Boy Advance was announced. Ghost Babel proved that a handheld console could host an authentic stealth-action experience without sacrificing the complexity that defined the genre. Developed in parallel with the PlayStation era Metal Gear Solid titles, it stands as one of the most ambitious original titles on the platform.
Tricks & Tales
The game's story is set in an alternate timeline — meaning the events of the PlayStation Metal Gear Solid (1998) did not happen in this continuity. The Western release used the 'Metal Gear Solid' brand to maximize recognition, leading many players at the time to assume it was a direct port or adaptation, which contributed to the game being underestimated as an original work.
Collector's Guide
Region & Compatibility
Japanese version titled 'Metal Gear: Ghost Babel'; Western versions titled 'Metal Gear Solid'. The Western title caused significant confusion about whether it was a port of the 1998 PlayStation game. All versions share the same gameplay and story.
Maintenance Tips
Game Boy Color cartridges — the smaller, slightly translucent-shell format — use the same cleaning approach as original DMG carts: a cotton swab with 90% or higher isopropyl alcohol wiped along the contact row, allowed to dry fully before reinsertion. The GBC console's ABS plastic shell faces the same yellowing risk as the DMG when exposed to UV light over time. Notably, several GBC titles — most famously Pokémon Gold, Silver, and Crystal — include a real-time clock (RTC) circuit that runs continuously off a CR2025 coin cell. These batteries are now well over 25 years old; a dead RTC battery means time-based in-game events will not advance, even though the game itself will still load and save normally. This is a distinct issue from save data loss.
Going deeper
Explore the machine this game ran on, and what to check before you buy or care for one:
What to Watch Out For
Before buying, these are the points worth knowing — from someone who handles original Japanese Metal Gear: Ghost Babel copies regularly.
Is this a region-free game? Will a Japanese Game Boy cartridge work on any Game Boy console?
Yes. The original Game Boy, Game Boy Pocket, and Game Boy Color have no hardware region lock — a Japanese cartridge plays on any Game Boy or Game Boy Color console worldwide without modification. The game itself is in Japanese, but the hardware accepts it freely. Game Boy Advance consoles are also backward-compatible with Game Boy and Game Boy Color cartridges and share this region-free status.
How should I clean a Game Boy cartridge?
Apply 90% or higher isopropyl alcohol to a cotton swab and gently wipe the gold-plated edge contacts on the base of the cartridge. Never blow into the cartridge — breath moisture accelerates contact corrosion. If the shell needs to be opened for deeper cleaning, Game Boy cartridges use 3.8mm security game bit screws. The contacts are small; clean with a gentle wiping motion rather than abrasive pressure.
Before You Buy
Things worth knowing before you buy Metal Gear: Ghost Babel
A short checklist for buying a used Game Boy Color cartridge wisely — useful with any seller, anywhere.
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Choose a seller who tests it before shipping
A copy that has actually been powered on and checked is a known quantity. An untested one is a gamble you only settle after it arrives.
Look for a seller who states it was function-tested and says what they confirmed. A serious seller can tell you exactly what was checked.
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Good news — Game Boy Color is region-free
These cartridges are not region-locked, so a Japanese copy plays on any compatible Game Boy worldwide.
Confirm whether the title is Color-only or also works on the original Game Boy.
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If this title saves your progress, check the battery
Cartridges that save use a small coin-cell battery that fades over decades — a dead one wipes your save without warning.
Ask the seller whether the save function was tested. Replacing the battery is possible, but doing so erases any existing save.
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Check that the contacts are clean
Dirty edge contacts are the most common cause of startup and sound trouble in cartridges of this age.
Choose a seller who cleans the contacts before shipping. A note that it was tested and cleaned means the basics were handled.
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Read the seller's reviews and return policy
A 100% positive record across thousands of sales is close to a guarantee — packing, communication and problem-solving all work for everyone. A return policy protects you if something is off.
Read the feedback and confirm a clear return window before you buy.
The last step before buying anywhere is knowing what it's worth.
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