List of levels included from oldest to newest:

Roll!
Night of the Twisters
Trapgems
Gem Playground
Looks are Deceiving
Muddy GyroRocket
Vertigo Generator
Circular Cube
Cheeseworld
Pitfalls Extreme
Twists of Terror
Velocity Race
Thrill Ride: Gem Edition
Gravity Plexer

SPSTC Maze
Spoon in the Road: By Sporlo
SRGL 746
Matrix Master
SRGL2: Tornado Tightrope
Puzzle Playground
Speed Gems (Skiiz's level)
Loti Level
Level 7
Wall Slide