This Article Contains information directly from the Pikmin Games. This article is based off of an Enemy/Treasure/Area/Cave/Pikmin/Character from the Pikmin series of Games.
The Mirth Sphere is a rather small, clear marble with a blue pattern inside. It is found on the first sublevel of the Cavern of Chaos, and is located in one of the alcoves. Be cautious, as there are many hazards here, including Bomb-rocks and electric nodes.