Gravity Lines (also known as Inversion Planes) are very common elements in VVVVVV. They are thin lines that change the gravity Viridian is facing. If horizontal placed, it will automatically kick Viridian out, if vertical placed, Viridian will change gravity as how it changes when the player press the ACTION button. While touching a vertical gravity line, the line will deactivate until Viridian moves away.
- Gravity Lines are used in both Gravitron and Super Gravitron.
- Placing a Gravity Line in both ceiling and ground will make the player and any other crewmate that follows him bounce infinitely.