Portal: Outside Influence

From the Portal Wiki

Portal: Outside Influence is a commercial Portal modification, containing elements from Half-Life and System Shock. It will be released on Steam and makes use of a custom build of the Source Engine.

Portal: Outside Influence
Portal Outside Influence Splash.png
Basic Information
Developer:

Elite Treacle Ltd.

Engine:

Source Engine

Released:

TBD

Modes:

Singleplayer

Genre:

First-person puzzle/platformer


The war is over. Mankind lost. Scattered and spread across the planet, the survivors search for refuge in the ruins of the old world. One of these stragglers stumbled across something that hasn't been seen by outside eyes for a long time...

The mod includes new testing elements, environments, music and voice lines. The mod has been designed by Cay Morris, who also designed the Portal map Portal: Skyline.

Gallery