A baby shaking a rattle to inflate enemies: the concept is bonkers and adorable. Original mechanics, enchanting graphics, accessible difficulty. A little-known gem of the Famicom catalogue.
Your verdict
Category
Platformer1 player3+
Description
Platformer featuring baby Upa battling creatures in an enchanted world with magical bubbles. Published by Konami, released in Japan in 1986. Upa in side-scrolling view blowing colored bubbles to trap enemies, color-based transformations and creative bosses. An original and charming Konami platformer on Famicom.
Bio Miracle Bokutte Upa review
4/5
Art direction
★★★★★
"Striking"
3/5
Music
★★★★★
"Memorable"
2/5
Story
★★★★★
"Classic"
The nappy-clad baby faces round smiling creatures in a world of pastel colours, where the rattle that inflates enemies produces an immediately understandable visual effect. The scenery, clouds, candy castle, caverns, keeps soft outlines, and every world changes chromatic range entirely.
Complete: box, manual and disc/cart very clean. Lightly handled.
Q1 damagedQ6 completeQ10 new
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Collector interest
A Konami Famicom-exclusive platformer never officially released in the West on this hardware, where baby Upa neutralises foes with bubbles. Its reputation as a hidden studio gem and its limited Japanese run drive complete prices among the highest in the genre on Famicom. The plain cartridge hides a title beloved by fans of Konami design, with the Japanese box being the key piece of any complete set.
An underrated gem
You guide a baby who traps enemies in bubbles before bouncing off them: behind this adorable concept, Konami slips in a platformer of exemplary polish, brimming with inventiveness and good cheer. Stuck in Japan, it went unnoticed in the West. A colorful bit of sweetness, perfect for anyone who loves charming platformers.
Is Bio Miracle Bokutte Upa still worth playing in 2026?
A platformer from Konami, Bio Miracle Bokutte Upa stars an adorable baby who fights creatures in an enchanted world thanks to a magic rattle that projects bubbles able to trap enemies and serve as platforms. The charming concept, the shimmering art direction and a clever, accessible gameplay make this overlooked title a real success, long Japan only. The generosity and the finish impress. For a retro platforming fan, someone curious about Konami gems or a collector, the title keeps an intact charm and inventiveness.
