With the release of first-person puzzler
Portal 2 this week, Valve has revealed that the original
Portal has sold nearly four million copies worldwide.
However, this total
does not include digital sales via its Steam platform, reports news site GameSpot.
Portal was sold as part of
The Orange Box on Xbox 360 and PlayStation 3 along with
Half-Life 2,
Half-Life 2: Episode One,
Half-Life 2: Episode Two and
Team Fortress 2.
It is also available as a stand-alone retail release for PC, and as a digital download for Xbox Live Arcade, with the title
Portal: Still Alive.
Sequel
Portal 2 has received critical acclaim, with a Metacritic rating of 95 out of 100, and reviews describing a sequel that is "significantly bigger and more robust in virtually every meaningful way, but without feeling any less dense."
It is also
the first title to feature PC-derived Steam functionality on a home console -- gamers who purchase the title for PlayStation 3 will also be able to unlock a Steam Play copy of the game (i.e. the full PC/Mac version) for free by linking their PlayStation Network accounts with Steam.
