The game also takes advantage of a cut part of the Portal series in Pneumatic Diversity vents/tubes, which were featured in early trailers for Portal 2. Unlike the stationary locations of gel in Portal 2, however, the paint gun allows the player to apply the gels to paint-enabled surfaces through the levels. Both gels were featured in Portal 2, with the blue providing a jump boost and bouncing pad and the orange gel providing a speed boost. The primary tool used in the game is the paint gun which fires two kinds of gel, blue and orange.
