Behold the Lego Great Ball Contraption (GBC), dreamed, designed and built by a 21 year-old Japanese college student who goes by the name of Akiyuki, (Akiyuky if you want to search him on YouTube).
Taking over 600 hours of work, this robotic wonder is the perfect blend of engineering and art as the 31 meters of 17 intricately built stages hypnotically and seamlessly operate with the sole existential purpose of moving tiny plastic soccer balls and basketballs in a perpetual loop.
It was designed using Lego Mindstorm, which is a line of Legos bundled with various programmable CPUs, sensors, and motors to create fully functioning robots. Akiyuki’s creation utilizes a large sized robotic arm, but that is just a drop in the bucket of whimsy that is the GBC.
This contraption is a clicking, clacking, cacophony of claws, clamps, conveyors, catapults, carousels, cranes, carts, cogs and coils that would make Willy Wonka and Pee-Wee cry on each other’s shoulders in shame.
But the best way to experience this machine is to watch the video for yourself. Better get a snack first though, it’s a long trip. You’d probably have to watch it again to catch everything too.
If you’d like to learn more about the GBC you can visit Akiyuki’s blog. It’s in Japanese but has many videos and photos outlining the various components.
Source: Lego Technic via Irorio (Japanese)

LEGO “ball contraption” at Japan Brickfest is hypnotizing in its mechanical efficiency 【Video】
Starbucks Japan teams up with Traveler’s Company for new stationery and goods collection
Japanese convenience store Lawson now has stir-fried noodle-cooking robot chefs
Kochia calling: Right now is a great off-season season to visit this beautiful Japanese park
Pokémon Center Online designates first Pokémon items that will require Japanese ID card to buy
Over 400 titles of free translated manga from publisher Shueisha available for a limited time
Beautiful Totoro bonsai figure needs no watering, makes soothing rain showers whenever you want
Anime fan in Japan arrested for ordering and cancelling over 4.3 billion yen in anime merch
7-Eleven Japan rethinks convenience store drinks with new Grilled Corn Chilled Soup Smoothie
Pokémon comes to McDonald’s Japan for new Happy Meals toys, brings every generation’s starters
Resident Evil’s terrifying Licker becomes a bag in Japan that wants to feed you
Air-conditioned dress shirts arrive in Japan to save working professionals from sweltering heat
Tokyo’s newest viral dessert is like a Japanese parfait inside a bread bun [Taste test]
Japanese vending machine sells freshly squeezed lemon juice with a futuristic light show
7-Eleven Japan adds new chocolate fruit gummies to its sweets range, but are they worth the hype?
Studio Ghibli’s No Face twirls to sound of Spirited Away’s theme song in beautiful accessory box
Starbucks Japan opens new store inside historic seaside quarantine station near Tokyo
Live-action Princess Mononoke is coming to streaming as a live event, previews look amazing [Video]
Studio Ghibli has a new anime out, and there’s only one place in the world where you can see it
Tokyo subway installing new ticket gates that don’t accept payment through Suica or other IC cards
Japan now has human refrigerators inspired by Japanese vending machines
Hatsune Miku collaborates with Hokusai’s art in new Vocaloid ukiyo-e illustration series [Pics]
New Shinkansen luggage drop-off system begins in Japan, making train travel even easier
Studio Ghibli releases anime T-shirts that pay homage to one of Hayao Miyazaki’s most personal films
Family Mart opens new “Famima” flagship store in Tokyo that’s like a tourist attraction
Uniqlo looks back to the very start of Pokémon with new black-and-white pixel art T-shirts[Pics]
Japanese Shinkansen becomes an overnight hotel for three nights this summer
Japan announces sudden 400-percent increase in visa fees for foreigners entering the country
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Starbucks Japan releases new drinkware and goods for Valentine’s Day
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Japan’s newest Shinkansen has no seats…or passengers [Video]
Japanese ninja certification exam attracts 131 candidates from Japan and abroad
Salomon releases Japan-exclusive Mt. Fuji hiking gear that doubles as an amazing souvenir
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】