Portal is a first-person puzzle game. Players must solve physical challenges by opening portals to manoeuvre 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
This is the Portal MultiPlayer MOD you will need the original portal to install it. It is free and it is able to everybody, Multiplayer Portal!
a Portal mod with plenty of sports with the use of portal guns
Portal Stories is a mod-in-the-making for portal, The story is set before the events that happened in the official game. an unofficial prequel so to speak...
Portal | Underground story This Portal story is based on the MTN Portal Story | Part One! This mappack includes around 75 levels. in this mappack have...
Portal 1.6 is a mod for the game portal. The storyline starts with GLaDOS being disassembled, and the entire system being formatted and replaced with...
Portal Combat is a modification which combines VALVe's Portal Tecnology with an unique combat system.
The story behind the military androids mentioned in chamber 16 of the original Portal
Portal: Prelude, as its name states it, is an unofficial prequel to the game Portal. Its story revolves around the pre-GlaDOS epoch, even before she was...
Project-Beta is a full content mod for Portal. This mod will include, new textures, new models, new particles, and a new story mode. There are 2 Possible...
Portal: Reverb. In Portal: Reverb, you play as the first Test Subject in the ASHPD Testing Sequence after GLaDOS' little accident with the Enrichment...
Portal: Stay Inside is a third-party, completely independent mod for VALVe's Portal. My goals are to follow the style of the original game--a series of...
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...
This mod is the first where you can explore the facility. it has all doors open and features several rooms that are behind the scenes. it is still being...