Update 1.8

Update 1.8 is an update in Geometry Dash that was released on August 7, 2014. It primarily added Hexagon Force, dual mode portals, and slope ground objects.

Introductions
The most noticeable introduction into the full version was the addition of Hexagon Force, which was seen in the sneak peek of the update. This level marked the first appearance of the sloped surfaces, which allowed the icon to travel at different angles. Within Hexagon Force, the brand new "Dual Mode" portals are seen and used for the first time. This mode required players to control two characters at once.

Outside of the new level, the 1.8 update introduced four new icons and two other colors, peach and dark grey. This update introduced the secret achievements given for tapping the icons on the home screen. New kinds of black thorns, saw blades and decorations could also be added using the level editor, as well as being able to use a new "Hexagons" background and floor theme. More blocks were also added, as shown in the sneak peek. The Play-Test mode was also introduced, allowing creators to test the level's obstacles on the go without having to "Save and Play", making the character leave a guideline that served as a reference to where the character went through in the test. The "2 player mode" was also introduced in the editor, so 2 players could control each individual character itself during a Dual Mode segment, by tapping different sides of the game screen.

Trivia

 * In the first image, there is a slope on the left that was slightly modified before it was added to the game. In the game, it no longer has the vertical line splitting it into two. This vertical line however is still surprisingly seen in the invisible variant of the slope.
 * The sneak peek left out or added in numerous from the final version of Hexagon Force.

Geometry Dash Lite Introductions
On August 12th, 2014, Geometry Dash Lite was updated to 1.8, which introduced the following:
 * New level "Jumper"!
 * New Achievements and rewards!
 * Bugfixes and tweaks.