Portal: A
unique take on puzzle gameplay by the makers of Half-Life. Portal is a
new type of single player game that changes how players approach,
manipulate, and surmise the possibilities in a given environment in a
manner similar to how the Gravity Gun changed our approach to how an
object may be leveraged in any given situation.
Portal was first
included with the release of Half-Life 2's Orange Box. Now, each game
from that pack is available as its own boxed title for gamers to pick
and choose their favorites.
Portal 2: The highly anticipated
sequel to 2007's Game of the Year, Portal 2 is a hilariously
mind-bending adventure that challenges you to use wits over weaponry in a
funhouse of diabolical science.
Using a highly experimental
portal device, you'll once again face off against a lethally inventive,
power-mad A.I. named GLaDOS. And this time you won't be alone. Meet an
expanded cast of characters as you think your way through dangerous,
never-before-seen areas of Aperture Laboratories.
Break the laws
of spatial physics in ways you never thought possible, with a wider
variety of portal puzzles and an expansive story that spans a single
player and co-operative game mode.