Portal: Revolution is a free to play mod for Portal 2. This fully featured original campaign plays before Portal 2 in the dead and decaying Enrichment Center...
“Portal: Revolution is a free to play mod for Portal 2. This fully featured original campaign plays before Portal 2 in the dead and decaying Enrichment Center.”
from the video description;
“Portal: Revolution is a free to play mod for Portal 2. This fully featured original campaign plays before Portal 2 in the dead and decaying Enrichment Center.”