EXOTICUS
A tropical planet with lots of castle structures and green slime in the cave systems. Enemies are ravens and turtles who fly around on some sort of hoverboard.
INDUSTRIUS
A big factory like area, located in a large city, with lots of advertisements for various Epic things. The enemies are turtles in really big and strong tank things.
MUCKAMOK
A generic swamp planet with green slime and whatnot. Enemies are wild green frog creatures who dance back and forth, and the boss Zoonik the Hedgehog, who can teleport and has a gun and stuff.

RANEFORUS
A series of rocky platforms floating in the air above a vast ocean, home to many bushes, cacti, trees and other forms of plant life. Enemies are little brown monkeys and some giant white owls who don't pay attention to you and can't hurt you.
STONAR
An ordinary grassland planet with lots of stately castles constructed from enormous brown blocks, and some skeletons and stuff. Enemies are red versions of the Armor-Doofi from Battleships, except they take fewer hits to destroy, and the grasping hands from Holidaius.
DECKSTAR
A parody of the Death Star, set on what appears to be a moon, with blue walls and pink pipes and stuff like that. Enemies are enormous turtles with big guns, and the sparks from Tubelectric.

CERAMICUS
Kind of hard to understand or explain, just look at the conversion and figure it out for yourself. Enemies are giant turtles who jump around with their eyes closed.
DESERTO
A desert planet with many ruined temple things and several waterfalls for no apparent reason. Enemies are green lizards (similar to those in JJ2 but a different color) and some devil creatures which stand around and breathe fireballs at you.
LAGUNICUS
A beachish planet with starfish and abandoned peer structures and lots of water and not much else. Enemies are fish, which swim back and forth, octopi, which swim back and forth, and another form of octopi which rise and lower themselves in the water to keep up with your y position.

There's no point in listing Holidaius, Candion and Bloxonius as they're freeware and you already have them as a direct result.