Two of Japan's biggest comedians, kicking and farting their way through a kidnapping case.
In 1987 Japan, the PC Engine's first platformer wasn't a hero with a sword — it was Cha Katō and Ken Shimura, two beloved comedians from The Drifters whose Saturday-night TV show was must-watch television. You kicked enemies, sprayed them with your own flatulence, and laughed at toilet humor that a whole country recognized. When it crossed the ocean as J.J. & Jeff in 1990, the celebrities were erased, the farts became aerosol cans, and the cruder gags were scrubbed — leaving a strange, anonymous comedy. The joke only fully lands if you knew the two men whose faces were quietly removed.
About this game
J.J. & Jeff is a platform game for the PC Engine (1990), from Hudson Soft. Part of Enjoy Game Japan Museum's record of Japanese originals.
Tricks & Tales
This was the very first platformer released for the PC Engine, arriving roughly a month after the console's late-1987 launch. In the Japanese original your weapon is your own flatulence; the American J.J. & Jeff replaced it with an aerosol spray can and removed cruder gags like urinating on lampposts. A famous secret: kicking on top of a tree stump makes a hidden platform appear, bridging gaps that look impossible to cross.
Collector's Guide
Region & Compatibility
The PC Engine (Japan) and TurboGrafx-16 (North America) share the same physical HuCard slot shape but are not compatible with each other's software. NEC deliberately reversed the data bus wiring between the two regions: data pin D0 on the PC Engine corresponds to D7 on the TurboGrafx-16, and so on through all eight lines. Beyond the hardware wiring difference, most North American HuCards contain region-checking code that detects a Japanese console and immediately crashes. Converters that electrically flip the data bus do exist and allow cross-region play. CD-ROM² discs themselves carry no region protection and play freely on both systems—however, the System Cards required to boot CD software are region-locked in the same way as HuCards, so a Japanese System Card cannot be used in a TurboGrafx-16 and vice versa.
Maintenance Tips
HuCard contacts are the most common maintenance point on the PC Engine and TurboGrafx-16. The card's edge connector oxidizes over decades of storage, causing failure-to-read and graphical glitches. Cleaning with 90%+ isopropyl alcohol on a cotton swab—gently wiping the gold contacts on the card itself—resolves most contact issues; stubborn oxidation responds to dedicated contact cleaners such as DeoxIT. Never blow into the card slot with your mouth, as moisture accelerates the very corrosion you are trying to remove. On systems equipped with the CD-ROM² or Super CD-ROM² add-on, the optical drive is subject to the same age-related laser and sled degradation seen in any CD system of that era; the laser assembly uses a KSS-220a-type unit on the Super CD-ROM² and replacement parts remain available.
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 J.J. & Jeff copies regularly.
Is this the Japanese Kato-chan version or the American J.J. & Jeff?
This is a Japanese HuCard, so it plays as the original Kato-chan & Ken-chan with the comedians and the uncensored toilet humor intact. A PC Engine console or converter is needed; it won't fit a stock US TurboGrafx-16.
Do I need to read Japanese to play it?
No — it's an action platformer driven by jumping, kicking and timing, with almost no text that blocks play. The cultural jokes are a bonus, not a barrier.
Before You Buy
Things worth knowing before you buy J.J. & Jeff
A short checklist for buying used PC Engine software 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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Make sure it fits your console
Japanese PC Engine HuCards and CDs are not compatible with the North American TurboGrafx-16 — the formats differ. Use a Japanese PC Engine system.
Play it on a matching Japanese console or a region-free system, and confirm the listing states the region.
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HuCard or CD-ROM² — know which you're buying
PC Engine games come on HuCard chips or on CD-ROM². CD titles also require the right CD system and a working System Card.
Confirm the format in the listing, and for CDs check the disc surface and that saves are supported.
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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.
See what it's selling for on eBay →Unexpected Discoveries
Games you weren't looking for — but might be glad you found.
Rooms this game lives in
Wander deeper — explore the themed rooms where J.J. & Jeff 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.
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