Rift Planes are a series of unique dimensions that exist on the other side of Gravity Storms. In Gravity Rush it is shown that Gade can summon a Gravity Storm (right). Each Rift Plane has a chance to spawn a Giant Nevi or even a Rare Nevi. Heres a list of the eight Rift Planes and the powers that they grant Kat.
The Ruins, Spiralling Claw
The Inferno, Gravity Typhoon
The Mirage, Micro Black Hole
The Enchanted Zone, Also Spiralling Claw
The Candle Zone, Lunar and Jupiter Styles (Gravity Typhoon and Micro Black Hole respectively)
The Toflug Reef
Mining Site No.0
Mining Site No.13