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...
In addition to what others have said (all those examples are equally misleading IMHO), given that its the 25th Anniversary of Half-Life, a lot of us are primed to hope for news of a new game from Valve.
In addition to what others have said (all those examples are equally misleading IMHO), given that its the 25th Anniversary of Half-Life, a lot of us are primed to hope for news of a new game from Valve.