Opoona , is a lifestyle RPG where the player takes command of a boy who is descended from a race of warriors called the Cosmo Guards. The player's character crash lands on a mysterious planet called Landroll while on vacation with his family. Upon waking up, he finds out his parents are seriously injured and being taken care of at a local hospital, while his brother and sister are lost on the vast planet.
The player must travel from colony to colony on the planet to find his siblings. To do this, they must first obtain a license to travel between colonies by completing various jobs. The player can take on tasks such as fishing, working as a park ranger, or even fighting monsters like evil flat screen TVs.
To find these jobs, the player must strike up conversations with the inhabitants of each colony and make new friends. They use the Wii-remote to move around and the nunchuk to target enemies, using it to fling energy "bon-bons" at opponents.
The game features a "friend-of-nature" theme, where the world of Landroll is in balance with the planet's natural environment. The player can collect items and shop for goods using money earned through odd jobs, including toys and artwork.