Portals: Difference between revisions

In ''[[Portal]]'' and the single-player campaign of ''[[Portal 2]]'', protagonist and test subject [[Chell]] can create blue (primary-fire) and orange (secondary-fire) portals with her version of the Portal Gun. In ''Portal 2''<nowiki>'</nowiki>s [[co-op]] campaign, each robot test subject possesses individual portal colors in order to differentiate them; [[Atlas]] creates cyan (primary) and purple (secondary) portals, whereas [[P-body]] creates yellow (primary) and red (secondary) portals. Portals wiil be removed if the surface the are placed on moves (Except in the Neurotoxin Generator in Portal 2).

Lone (unlinked) portals appear as solid-colored ovals, and paired (linked) portals appear as color-bordered ovals - with the rift forming into a mirrored view from the other portal. Portals are known for maintaining the mass and velocity of any object that passes through one portal and exits out the other. Portals are also capable of maintaining the flow of light and gravity, specifically the [[Excursion Funnel]]s and [[Hard Light Bridge]]s.