

At first, only the Repulsion Gel is available, although the second chapter brings an upgrade to the Paint Gun, allowing it to spread out the Propulsion Gel as well. An unspecified amount of time later, an AI companion in form of a Personality Sphere, named Nigel, appears and greets the main character - a female Test Subject - commanding her to begin testing.Īfter acquiring the Paint Gun, the player is challenged to complete sixteen test chambers. After a short intro, the player finds himself inside a Stasis Chamber in a Relaxation Chamber-like room.

Aperture Tag takes place in the Aperture Science Enrichment Center sometime after the conclusion of the Portal 2 co-operative campaign.
