It was Portal 2 that got me thinking about this. It seems to be a step in the direction that my train of thought was traveling when I made the thread. Portal 2 is the closest to a completely developed game that Valve has made. In comparison to its compatriots, it hasn't done so much to innovate as to refine.Tharwen said:Surely you're not describing Portal 2 as an experiment? What were they experimenting with in that that wasn't already tried in Portal?
Alien Swarm was a tech demo.icypain said:so what was half-life 1? and alien swarm?