Portals are special map components in Geometry Dash, Geometry Dash Lite, Geometry Dash Meltdown and Geometry Dash World. They modify the way the player interacts with the level and can also change the icon into different forms.
|Geometry Dash||GD Meltdown||GD World|
|Gravity||Initial release: Dry Out||-||Initial release: Frontlines||Inverts the icon's gravity|
|Mirror||Update 1.1: Time Machine||-||Initial release: Striker||Reverses the screen direction|
|Size||Update 1.4: Clutterfunk||-||Initial release: Available||Changes the icon's size|
|Speed||Update 1.7: Usable|
Update 1.8: Hexagon Force
|-||Initial release: Available||Adjusts the horizontal movement speed||Slow (0.8× speed)|
|Update 1.7: Usable|
Update 1.8: Hexagon Force
|-||Initial release: Available||Normal (1.0× speed)|
|Update 1.7: Electrodynamix||-||Initial release: Available||Fast (1.25× speed)|
|Update 1.7: Electrodynamix||-||Initial release: Available||Very fast (1.5× speed)|
|Update 2.1: Usable||-||Initial release: Available||Extremely fast (1.75× speed)|
|Dual||Update 1.8: Hexagon Force||-||Initial release: Available||Creates a second icon with inverted colours and gravity|
|Teleportation||Update 2.0: Deadlocked||-||Initial release: Available||Teleports the icon between portals along the y-axis|
|Type||Portal||Form||Introduced||Description||Vertical grid||Safe contact|
|Geometry Dash||GD Meltdown||GD World||Regular size||Small size|
|Cube||Initial release: Stereo Madness||Initial release: The Seven Seas||Initial release: Payload||Performs small successive jumps three times its height and falls steeply||Performs smaller jumps so can jump faster in succession||80 units, no ceiling||In the direction of gravity; H-blocks above and below|
|Ship||Initial release: Stereo Madness||Initial release: The Seven Seas||Initial release: Machina||Is rapidly propelled upwards and naturally descends gradually||Ascends and descends faster||10 units||Above and below|
|Ball||Update 1.2: Cycles||Initial release: Airborne Robots||Initial release: Embers||Moves steeply by alternating gravity given that there is contact with a surface although will not move in succession||Ascends and descends faster||8 units||Above and below|
|UFO||Update 1.5: Theory of Everything||-||Initial release: Space Pirates||Performs small non-successive midair hops and naturally descends gradually||Performs smaller hops and descends faster||10 units||Above and below|
|Wave||Update 1.9: Blast Processing||-||Initial release: Monster Dance Off||Is propelled at a constant speed at an upward diagonal and naturally descends at a downward diagonal||Ascends and descends faster and at steeper angles||10 units||Ground and ceiling; D-blocks above and below|
|Robot||Update 2.0: Geometrical Dominator||-||Initial release: Available||Performs controlled non-successive jumps that can reach up to four times its height and falls steeply||Performs smaller jumps and descends faster||80 units, no ceiling||In the direction of gravity; H-blocks above and below|
|Spider||Update 2.1: Fingerdash||-||Initial release: The Challenge||Teleports to the nearest overhead surface and flips gravity||Performs identically||9 units||Above and below|
|Unknown||Unknown||Update 2.2: TBA||-||-||Unknown||Unknown||Unknown||Unknown|
- Passing above the 80 unit grid due to the effects of antigravity or a moving object will result in a crash.
- Prior to its formal introduction, the deactivation gravity portal is encountered in Back On Track and Polargeist as part of collecting secret coins.
- Using a mirror portal will slightly decrease the level's marked completion percentage and progress bar, with no effect on gameplay.
- While under the effects of the dual portal, a crash with either icon will terminate the other, although they cannot collide with each other.
- While under the effects of the dual portal, the grid is locked to 9 vertical units, unless at least one of the forms is a ship, a UFO, or a wave, where the grid is then locked to 10 vertical units.
- Using teleportation portals that exit outside of the grid will result in the icon being returned beside the nearest boundary with no realignment of the grid. This does not occur for the cube or robot which are not limited by a ceiling.
- If entering a form portal of the same form the icon is currently and the portal is of a higher or lower position to the previous portal, the grid will vertically shift to realign with the new portal, with the exception of the cube and robot portals which do not lock the grid. This is demonstrated only once in a level on Stereo Madness with the alternate route for the third secret coin.
- Years, Space Pirates and Embers are the only levels that do not start with a cube form.
- Until Update 1.4, the ship only used the selected primary colour with slight shading. This can be seen from the images in the How to play section of the Settings menu.
- Fingerdash is the only main level of the main game to omit the use of a previously released form, being the ball.
- The ship and UFO each carry a slightly smaller version of the selected cube design. Under the effects of the size portal, icon designs are compressed into smaller sizes. Prior to Update 2.1 the cube and ball each acquired unique small designs which were not found in the Icon Kit. While the ship and UFO were under the effects of the size portal, they also displayed the small designs. This can be enabled from Options section of the Settings menu.
- The wave is unable to interact with jump variants of pads or rings.
- Entering manipulation portals provides additional visual cues:
- The gravity portal triggers brief coloured lines moving in the direction of the gravity.
- The mirror portal triggers every object to move to the opposite side of the screen.
- The size portal triggers a bolt of lightning striking the icon along with the screen flashing twice.
- The speed portal triggers coloured particles of the respective portal colour moving against the direction of the icon for a short time.
- The teleportation portal triggers a bolt of lightning between the two portals along with the screen flashing briefly.
- The activation gravity portal is the only manipulation portal that does not share its colour with a form portal.
- The size portal is the only manipulation portal that neither its activation nor deactivation variant uses the colour blue.
- The colours of the teleportation portals are a reference to the game Portal, with blue being the entry portal colour and orange being the exit portal colour.
- The ball, robot and spider portals are the only form portals which do not share their colours with a manipulation portal.