Sutte Hakkun is a puzzle action game in the shape of a platformer. The playing character is an abundant-beaked bird resembling a penguin, named Hakkun, that is able to walk and jump but not to fly. The Rainbow of Happiness shined in the sky above Peaceful Islands: one day it broke apart and now Hakkun has to track down, collect, and put together all rainbow crystals to relive it. The gameplay hinges upon two elements: blocks and potions, the latter of several colours. Hakku makes its way through levels by changing the position of blocks — that will be done by swallowing them to release them on an other place then — and sucking potions — that are to be injected to blocks by the beak, endowing them with new properties consequential to the colour of the fluid — from jars. A level is cleared when the rainbow shards in it are collected. Neither a time limit nor enemy characters are there impeding Hakkun's way. Equally distinctive is the score system: a set number of points is given at the beginning of each level, and a decrease happens with any move made, thus rewarding the player for completing levels with as little moves as possible. This version would later get re-released as the expanded "Event Version", which added a ranking system, followed by other two "Event Versions" released for the Satellaview. Another expanded version of the game, called Sutte Hakkun as well, was released as a Nintendo Power downloadable game, containing many levels left out of the Satellaview broadcast due to the Satellaview 8MB Memory Pak size. That version was also released later as a Super Famicom standard cartridge and for the Wii and Wii U Virtual Consoles.
