Enormous floating balls of nigh-indestructible painted rock, planets are a frequently encountered fixture of Planetary Annihilation.
Planets are round and semi-solid. They provide the only viable surface to place the majority of units and structures. They come in various types, each with its own distinct character and color.
All planets are covered in bizarre materials called biomes, though this does not negatively affect a planet's self-confidence, and is widely considered a positive trait. The types of biomes likely to appear on a planet depends on the planet's type. A strange substance known as water also commonly appears on some planet types.
Any planet can be a source of metal deposits.
Some planets can be gifted with self-will by a marvelous structure known as the Halley. A planet so enabled will gleefully smash into another planet if given the proper permission.
Planets spend the majority of their time worshiping other large spherical objects through a bizarre ritual known as an "orbit". Planets often orbit other planets. Particularly eccentric planets will take marching paths that are wider in one direction than in the other.
Despite having similar characteristics and a seemingly peaceful demeanor, planets do not tolerate the close presence of other planets and will collide violently at the slightest touch. These exciting territorial clashes usually result in the annihilation of one of the participants. This is most frequently seen with planets bejeweled by Halleys.