| Console: | Sony Playstation 2 |
| TV Standard: | NTSC-U |
| Developer(s): | Capcom |
| Publisher(s): | Capcom |
| Release Date: | 2004-10-12 |
| Players: | 2 |
| Co-op: | No |
| ESRB: | T - Teen |
| Type: | Action, Adventure |
The story revolves around the Planet Mischief, where there is a tradition that once someone turns 3-years old, he/she must travel to a planet and learn how to perform "Mischief" and cause panic on that planet. Cosmi, a three-year old alien, travels to Earth for his mission, in order to impress his father, the Master of Mischief, Cosmi Sr., mostly because Earth is considered the greatest challenge. Cosmi crashes with a TV satellite from a town called Coco Town. When crash landing, he manages to hide in an alley on Coco Town, where he is saved by Earth's Mischief Master, Master Itazura. He takes him to his Dojo to train, and lets Cosmi move on with his mission, on 8 different locations: CocoTown, HighStakesHill, Pranksyvania, PharaohIsland, BigBootyBay, FrontiersVille, RaccoonCity and finally Cosmopolis. It is revealed that Cosmopolis is a trap for "Anti-Alien-Forces" to capture all of the aliens on Earth by disguising themselves as aliens. Itazura uses their trap as the final challenge for Cosmi, and challenges him personally there. Cosmi wins and travels back to Planet Mischief to celebrate, but crashes into another TV-station and crashlands on Earth again, this time, in the middle of CocoTown square. Of course, panic arises and reporters try to get a snapshot of the little alien, but Cosmi accidentally pushes someones camera around, causing it to take a photo of the crowd, thus revealing that several of them are also aliens.
