This stage is banned in tournament play. The left side of the stage is a walk-off sloped surface with a very close side boundary, promoting degenerate camping strategies and allowing for early KOs. The main platform is pass-through, which makes sharking an issue. Couple that with the right edge of the slope, which ends underneath the main stage, and you have a powerful position that can be used for both sharking and circle camping.
In the Pikmin series, Captain Olimar journeyed to an unknown and unnamed world. Because the planet that Olimar traveled to had no name, it was simply called Distant Planet because it was far away from Olimar's homeland. Many characteristics of the stage come from the planet which Olimar traveled to.