Bubble Bobble gives solo players a false ending. The true ending requires two. The game cannot be finished alone.
Fukio Mitsuji was aiming at people who were not yet in the building. He put two dinosaurs, Bub and Bob, on a single screen and gave each of them one weapon: a breath that wraps an enemy in a bubble. Pop the bubble and the enemy is gone. Clear every enemy off the screen and the door opens. One player takes Bub; a second, if there is one, takes Bob.
The two are mechanically identical, and yet the second player changes the game underneath you. Stages built to be survivable alone become manageable. The enemies behave differently according to how many of you are on the screen. Certain items and power-ups appear only when there are two.
And then there is the hundredth stage, where the game looks at how many of you are holding controllers before it decides which ending you have earned.
Bubble Bobble was fun. Forty years later the name is still around, which is not true of many games from that time.
Putting this page together, I found the reason. The game never counted on a customer arriving alone. Clear all one hundred stages by yourself and it does not congratulate you. It tells you to come back with your friend, and that is the end of it.
The pictures are coarse on a modern screen. It is still played anyway, because what this game needs is not a better machine. It needs a second person sitting next to you, and there has never been a shortage of those.
I used to think that making everything possible for one person was the kind thing to do. This game refused to, and it lasted forty years. Being easy to use and being used for a long time are apparently not the same thing.
About this game
On October 30, 1987, the arcade cabinet came home on a disk you could carry in one hand.
Fukio Mitsuji had designed the original the year before, and he had designed it for people who were not in the room. A Japanese arcade in 1986 was almost entirely men. He wanted the women and the couples who kept walking past the door, so he built a game that puts two players on one screen at the same moment — and then made certain it would not end properly for anyone who arrived alone. A hundred stages, two bubble-breathing dinosaurs named Bub and Bob, and a door that opens only once the screen is empty.
Gallery
The Story Behind
Play in a 1986 Japanese arcade was largely a matter of taking turns. You set your coin on the cabinet, you waited for the machine to come free, and the person ahead of you was your opponent or your predecessor — never your partner. The games were built for exactly that: one player, then the next player, then a high score table to settle the argument.
Bubble Bobble wanted two people standing at one cabinet at one time, helping each other. The parts were not conjured from nothing — Taito already owned them. Chack'n Pop, from 1983, had supplied the single-screen layout and a number of the creatures. What Mitsuji changed was who the game expected to find at the controls.
The Disk Card reached Japanese homes a year before North America received the NES cartridge, and on the Disk System the game wrote your progress straight back onto the disk in your hand. The American cartridge arrived in November 1988 with a five-letter password for players to copy down by hand.
Tricks & Tales
Two players who clear it together are given the Happy End and a coded message that unlocks Super Mode; only a pair who go on to clear Super Mode are told who the final boss, Super Drunk, actually is — Bub and Bob's own parents, transformed. The arcade cabinet kept further clues in secret rooms behind stages 20, 30 and 40, which opened only for a player who had reached them without dying once. Neither the Disk Card nor the NES cartridge has those rooms in it.
Mitsuji did not stay to watch this one land. Rainbow Islands, his sequel, was already running in arcades that same October, starring Bubby and Bobby in the human bodies the true ending had handed back to them. He died on December 11, 2008, at forty-eight.
A player who clears all one hundred stages alone is not congratulated. They are told, "Come here with your friend."
Collector's Guide
Region & Compatibility
The Famicom Disk System was sold exclusively in Japan and was never officially released in any other region. It was designed as an attachment to the original Famicom, using a rewritable magnetic Quick Disk format — a medium that no longer has manufacturer support and that Nintendo ceased rewriting or selling decades ago. Buyers outside Japan should understand that there is no Western-compatible equivalent: FDS software requires a Famicom console, the RAM adapter, and the dedicated power adapter, all of which are Japan-market hardware. The disk media itself is not readable by any standard floppy drive.
Maintenance Tips
The drive belt is the most critical maintenance item. The original rubber belt (approximately 31mm diameter) stretches and eventually fails after decades of storage, preventing the drive from reading disks. Replacement belts are widely available from retro hardware suppliers and require no special tools -- a documented procedure exists in multiple collector guides. After belt replacement, the drive may need alignment, which is a more involved process. The RAM adapter board contains electrolytic capacitors that should be recapped if the unit is used regularly -- leaking capacitors can damage the PCB and corrupt disk reads. Clean the battery compartment with vinegar and a cotton swab if corrosion is present. FDS disks should be stored in their cases away from magnetic sources.
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 Bubble Bobble copies regularly.
What hardware do I need to play a Famicom Disk System game?
An FDS game requires three components: a Famicom console, the RAM Adapter (which plugs into the cartridge slot), and the Disk Drive unit (connected to the RAM Adapter). The drive requires its own power supply (six C-cell batteries or an AC adapter). Without both the RAM Adapter and disk drive, FDS disks cannot be played. The Famicom Disk System was sold exclusively in Japan and was never released elsewhere.
Are Famicom Disk System disks and drives still reliable after 35+ years?
Disk reliability varies — the magnetic media can degrade over time. More commonly, the rubber drive belt inside the FDS disk unit degrades with age, causing read errors even on undamaged disks. Belt replacement is the most common and important FDS maintenance repair. If you plan to use FDS games, have the drive belt inspected before use. A working drive with a fresh belt can read original disks reliably.
How does saving work on Famicom Disk System games?
FDS games save directly back to the floppy disk itself — there is no internal battery backup. Data is written to the disk after the save command is given, so the disk can be overwritten. To protect original game data, cover the write-enable notch with tape to make the disk read-only. Many collectors keep one play copy and one archival copy for important titles. Never power off the Famicom during a disk write operation.
Before You Buy
Things worth knowing before you buy Bubble Bobble
A short checklist for buying a used Famicom Disk System disk 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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Inspect the disk and its shell
Disk System media is fragile — the magnetic disk can wear, and saves are written back onto the disk itself.
Ask whether it was tested and reads reliably; look for cracks or a warped shell in photos.
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Make sure it fits your console
This is Japanese Famicom Disk System media and requires a Famicom with a working Disk System drive.
Play it on a matching Japanese console or a region-free system, and confirm the listing states the region.
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Mind the drive belt on the console side
Disk System drives commonly need a replacement belt to read reliably — this is a console matter, not the disk.
If reading is unreliable, the console's belt is the usual culprit, not the game.
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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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Rooms this game lives in
Wander deeper — explore the themed rooms where Bubble Bobble sits alongside its kin.
Memories from around the world
This is a young museum, and this page is still waiting for its first voices. The memories people send reach Taisei personally, and the ones that move him find a home here over time — always with the writer's blessing. Yours could be the very first for this game.
Share your memory ↑From the Museum's Screening Room
Bubble Bobble — Max Explains