Portals

Portals are special map components in Geometry Dash. They modify the way the player interacts with the level and can also change the icon into different forms.

Trivia

 * The activation gravity portal is the only portal which does not have its colour shared by a form portal.
 * The robot and the ball portals are the only portals that do not have their colour shared by a manipulation portal.
 * If the cube or robot falls above the 60 units in antigravity mode, they will crash upon hitting the top.
 * Gravity and mirror options are not available for initial configuration in the level editor.
 * The slow speed portal was formally introduced in Hexagon Force, despite actually being introduced in Update 1.7, selectable in the level editor.
 * Entering any manipulation portal offers additional visual cues.
 * The gravity portals show brief lines moving in the direction of the gravity. This also happens with the blue and green gravity rings, but not when changing gravity of the ball.
 * The mirror portals expectedly flip the direction of the screen.
 * The size portals have the icon hit by a lightning bolt and the screen flash briefly as it changes size.
 * The speed portals show equivalent coloured particles moving against the direction of the player for a short time.
 * The dual portals expectedly creates two copies of the icon on the screen.
 * The teleportation portals show a brief flash of lightning connecting the two portals.
 * By entering a form portal of the same form the icon is at present, if it is in a higher or lower position to the original portal, the grid will vertically shift to realign with the new portal, with the exception of the cube form. This is demonstrated with the alternate route for the third secret coin in Stereo Madness.
 * When using the test mode on the level editor, using a mirror portal will not flip the screen due to it still being in the main editor section.
 * Placing successive mirror portals in the level editor may accidentally cause the progress bar to appear to deplete.
 * The size portal is the only manipulation portal that does not use the blue colour as a deactivation portal and instead uses green.
 * When shrunken from a size portal, the cube acquires a unique design that is not found in the icon kit, resembling a squished version of the first default cube icon with no blank space inside. The ball acquires a display virtually identical to its default icon, only smaller, which also happens with the dart. When using a ship, or UFO while shrunken, they will retain their specified icon designs, while carrying the shrunken version of the cube. The robot also retains its default icon design.
 * There is a glitch where if you are a dart and then you go through a size portal, you will still see your default dart design.
 * All portals (except the speed portals) have an alternate design in the level editor, where only a part of the portal is shown. This is due to portals having 2 separate images in the "GJ_GameSheet" file.
 * The green speed portal increases speed to such a degree that the cube can jump by about 1 tile further; the pink speed portal increases the speed so that it can jump about 2 tiles further, and the orange portal decreases speed so that it can jump about 1 tile less.
 * This applies to the UFO as well.
 * The ship and ball acsend and decend at more gentle angles at faster speeds.
 * The dart has an increased vertical speed as well.
 * The dart moves at 45 and approximately 63 degree angles in the normal and shrunken forms respectively and therefore aligns perfectly with similarly angled blocks.
 * Unlike the mirror and dual portals, with the teleportation portals you go through the blue one first than going through the orange one. But with the mirror and dual portals, you go through the orange one first, then you go through the blue one.