Place it at the start of a teleport transition, then follow the reveal with the Inception Horn for a dramatic landing, or cut to the Pop Sound Effect when the portal closes behind you.
About this sound
This short clip captures the opening of a blue portal from Portal, a quick rising electronic swirl that blooms and snaps into place in under two seconds. It feels sudden and futuristic, like a doorway tearing open in a clean white test chamber. The bright, sci-fi rush makes it instantly recognisable to players of the puzzle game.