d21lewis on 16 June 2010
Portal is easily in my top 5 games of this gen but, even as part of the "Orange Box", sold along side 4 other games, it didn't exactly set the world on fire as far as sales are concerned. It was a huge surprise, no doubt, that Valve is backing the PS3 like that (my E3 prediction was Half Life 3 for PC/360, only!). We'll see how much impact it has in the grand scheme of things, soon enough.
