Lilmon is a large and densely populated planet not too different from Zone 1's Earth. At its peak are the snowy hills of Caphyr, which stay cold year round. Crescent Valley is a beautiful sightseeing locale full of house-sized flowers and large, bird-like creatures called Phannas whom can carry upwards of several tons with their strong feet—one of the last remaining nests in the world. The land is not separated by oceans though there are several large lakes across the surface of the planet, so there is no shortage of water. Orbiting Lilmon is a moon called Maline, where a nefarious group known as the RIFSP (Research Institute For Supernatural Potential) have allegedly established their base. Not much is known about them at this time.

Chronalia, curiously, is the only planet within the Hidden World known to use its own unique, non-Mayan calendar; this is likely due to the fact that the planet harbors a whopping ten distinct seasons, thus making a calendar year a thousand days in length! As one might imagine, this hefty planet is as geographically diverse as they come, from the thickly forested Reshali Jungle to the sunkissed beaches surrounding Kalasa Ocean. As legend has it, so much was left of Chronalia after Rumia sculpted it that she used some of its excess to form the demigod Mealia.

The center of gravity on Halcika is nothing short of a mystery for the ages—while some playfully refer to it as "the upside-down planet", it isn't as though everything is flying upwards into space at all times; rather, it seems as though several specific structures on the planet maintain their own micro-gravities which everyone and everything surrounding them orbits. As one might imagine, Halcika is not a popular planet to live on, but those who do have adapted quite nicely to its unusual principles. As legend has it, so much was left of Halcika after Rumia sculpted it that she used some of its excess to form the demigod Hafical.

Levia is one of the oldest surviving planets. The gaping hole in its center is the result of heavy destruction from a war that ravaged the planet. As a result, Levia is frequently sponsored for charity events and its population struggles to rebuild to this day. It is sometimes even referred to as "the planet of poverty." Levia's early history was quite rich and artistic however, and many museums have survived there as relics of happier days.

Cinila is the only planet in Zones 2 and 3 with its own sun, as the others simply rely on the Spectral Pyramid from Zone 2 to reflect Zone 1's sun. As a result, Cinila is inhospitably hot and bright. Special ice suits have been designed in more recent times to withstand the heat, but these suits are only good for a limited time. The only reason anyone would want to visit Cinila is because of the incredible mineral reserves—there are unearthly beautiful, valuable gemstones and rocks formed on this planet.
The local species is a rodent-like creature that usually burrow themselves underground, rarely rising to the surface, to beat the heat.

Few celestial bodies are as bizarre (and endearing) as Clulo—termed "the pocket planet", this odd structure, determined by scientists to be a mix of organic and manmade components, appears average-sized when viewed from space, but is in fact small enough to hold in your own two hands. The world contained within it, as well as its population—if it has one—are a total mystery.
Once, many years ago, Clulo was plucked right out of space by a magic user seeking to research its properties, and claimed that having the planet in his possession caused him to sleep travel inside the structure that night, wherein he saw towering giants marching across a vast expanse of flooded land. Since then, specially selected individuals have been allowed to temporarily borrow the planet every year, with each claiming to experience different, generally quite pleasant phenomena.