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.

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Portal: Betty's Adventure

Portal: Betty's Adventure

Adventure

Hello, and Welcome to Aperture Mesa Testing Initiative Center, here we will do a new adventure with the protagonist Betty Subject 14456 and the A.I GLaBDOS...

Portal: Ratman Stories

Portal: Ratman Stories

Puzzle

Portal: Ratman Stories is a fan-made mod for Portal, featuring Doug Rattmann (from the Portal 2 Comic) as Protagonist. Ratman Stories starts the day GLaDOS...

Outside Influence - Volume One

Outside Influence - Volume One

Cinematic

Discover Aperture Science anew with original puzzles, elements and environments in a fully voiced story.

Portal: Combined Technologies

Portal: Combined Technologies

Puzzle

Portal: Combined Technologies, also referred to as simply "Combined Tech", is a puzzle, story, and combat driven Portal 1 mod (recently being converted...

Blue Portals

Blue Portals

First Person Shooter

Blue Portals is a unique Portal mod that has players traverse through new test chambers using only the single portal device and many new test elements.

Map db

Map db

Arcade

this is not a mod. this a place for maps. next release:TBD

Portal: Source SDK Edition

Portal: Source SDK Edition

First Person Shooter

WHAT IS: Portal: Source SDK Edition? Portal: Source SDK Edition is an open source version of Portal 1 using the leaked 2007 code.

Portal: Aftertouch

Portal: Aftertouch

First Person Shooter

This Mod takes place between Portal: Prelude and the original Portal. Its the Year 2009... Glados has a new Testsubject with number #44362881 (her real...

Portal: Cyberspace

Portal: Cyberspace

Puzzle

Portal: Cyberspace is a mod for the valve game portal. When you awake in the Enrichment Centre GLaDOS attempts to force you to take part in a new and...

Hazmat's Portal Map Pack

Hazmat's Portal Map Pack

First Person Shooter

A small mod consisting of 7 maps. Designed to keep the original feel of Portal 1, while adding in puzzle elements only seen in Portal 2. This mod features...

Portal: Inside Out

Portal: Inside Out

Puzzle

A Portal 1 Modification where you have to fight your own way to more than 15 Evil levels that are developed by a powerful Malware Virus. There are some...

CWTH

CWTH

First Person Shooter

What you would do, if everything seems to be over and you are still alive? We are pretty sure you'd like to come home. The story takes place in Half-Life...

Portal : Revive

Portal : Revive

First Person Shooter

During the Revive, You should be quiet. Or, Your head would not be on your neck.

Aperture Testing Facilities

Aperture Testing Facilities

First Person Shooter

This is a Sci-Fi mod for portal.This mod is made totaly by me. Hope you like it

Underground Story

Underground Story

Puzzle

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...

iAmRattman

iAmRattman

Adventure

What ARE you doing? Without following this mod’s progress :D

Rexaura

Rexaura

Puzzle

Rexaura is a mod for Portal based on high energy pellets and several new mechanics surrounding them.

Cloned Cube

Cloned Cube

Cinematic

Cloned Cube is a Portal mod. It takes place after GLaDOS' fall in Portal. You assume the role of Chell's secret clone. You have to escape or else you...

Insane Aperture Prequel

Insane Aperture Prequel

First Person Shooter

This is based off of Portal: Insane Aperture, a project I am currently working on.

Portal: Insane Aperture [Rebooted]

Portal: Insane Aperture [Rebooted]

First Person Shooter

Portal: Insane Aperture's page on ModDB. Storyline and more info are in the full description.

Portal: New Adventure

Portal: New Adventure

Puzzle

Portal: New Adventure is a small mod for game Portal. It takes you to the Aperture Science Growing up center.Just few chambers in old style, don't expect...

< insert name here >

< insert name here >

Puzzle

< insert name here > is 4LFA's first Portal 1 mod, and probably their last. We need some map makers, texture designers, modellers and programmers to help...

Aperture : Déjà vu

Aperture : Déjà vu

Puzzle

It is a non-linear map which have many paths to take and reach the end. The point is, that you play a map one time and you are happy. Then you have a...

Portal: Unity

Portal: Unity

Puzzle

Portal: Unity is a mod for the Valve game "portal" with almost everything revamped. New story levels, New textures, redesigned portals, new protagonist...

Portal Extended

Portal Extended

Puzzle

Approach the light... Enter the world that is outside Aperture... Free yourself... You are [SUBJECT NAME HERE] from [SUBJECT HOME-TOWN HERE]. After volunteering...

Portal Pro

Portal Pro

Puzzle

Portal Pro is a set of test chambers focusing on solving puzzles locally rather than using complex fling techniques. The goal here is that the solutions...

Multiplayer Portal

Multiplayer Portal

First Person Shooter

This mod is a multiplayer version of Portal. It is currently in pre-alpha stage and will not work with Portal 2. Leave a comment if you want to join the...

Portal : Smile

Portal : Smile

Educational

portal smile has a few elements of portal2. but, this mod was released before portal2 release. and this mod is basically use korean language but you can...

Aperture: Recruit

Aperture: Recruit

First Person Shooter

What would you do if you wake up in a place that you never seen before? And if you did that in a game, and the game says that it happened? What you would...

Portal: Combine Partnership

Portal: Combine Partnership

Puzzle

This mod creates a connection between the Combine (Half-Life 2) and Aperture Science. It will most likely contain a new AI to replace GLaDOS. It will...