Portal is a first-person puzzle game. Players must solve physical challenges by opening portals to maneuver objects, and themselves, through the enigmatic Aperture Science Laboratories.
this is a mod for portal that is not played in apeture science it is played in half-life 1's black mesa but in another section of black mesa
A portal mod where you play as a turret on wheels instead of Chell. There will be combat oriented parts along with some puzzles.
This Mod is about time travel (or chronoportation). While travelling in time, one can create different kind of anachronisms, paradoxes, etc. For instance...
This is a Portal mod but you need HALF-LIFE 2 AND PORTAL i will not be posting the maps or gcfs. I need help if any one can sorry about the header i suck...
You are in a small group of rebels who have been approached by a group of Aperture Science scientists who have told you about the ongoing threat of glAd0s...