This game has been Greenlit by the Community!

The community has shown their interest in this game. Valve has reached out to this developer to start moving things toward release on Steam.

Greenlight is being retired. For more information on how to submit games to steam, refer to this blog post.
Portal: Outside Influence
Genre: Adventure, Puzzle
Platforms: PC, Mac, Linux
Languages: English
Players: Single-player
Jan 31, 2015 @ 2:36am
Feb 6, 2015 @ 10:17am
Recent Announcements View All (8)
PCGamer Weekender
Delay Announcement
  • LOD'ed projected textures
  • Spacially corrected reflections (parallax correction)
  • Video textures
  • Enhanced refraction shading
  • Reworked user interface
  • Basic support for the VPK2 format
  • Full particle editor support
  • An improved version of the Hammer editor
  • A new SDK launcher with support for workshop uploads and launching of user-defined tools.

We've been completely revamping the art style and working from uncompressed assets, as well as redesigning various models to match the new look. We've also refocused the gameplay from what we once had to something new and innovative that expands the Portal formula in a major way. I don't want to say more right now (we're planning a media release sometime soon), but rest assured that Outside Influence will be far better for the delay.

TL;DR: The game will be released and has not been cancelled, but won't be launching this month.

Sam Morris
(Lead Developer, Elite Treacle Ltd.)

Release date: Late 2017-Early 2018
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...

NOTE: Is a third-party mod, not endorsed or created by Valve.

Outside Influence is a mod for the original Portal; a new story set within the shared Half-Life/Portal universe, with new testing elements, environments and music. Contains additional features, such as fully voiced audio logs that tell the stories of those who worked at Aperture Science in its last days, improved visuals and a zoom scope a la Portal 2.

Featuring a large voice cast along with music from NxSG, Alphadeus and Egill And. Design, models and textures by Sam "SpAM_CAN" Morris, creator of the prize winning map "Portal: Skyline"*, Portal 2 maps "Core Civ" and "Cave's Caves", and the GameSpot featured CS:Go map "Reclamation". Written by Sam Morris and Emilia Wake, with sound design by Matt Turner.

This is "Volume One" of Outside Influence. Volume Two will be released at a later date as a mod for Portal 2, concluding the storyline started here. We are targeting release on Windows, Mac and Linux sometime soon.

(*Due to Greenlight restrictions, I can't directly link Portal: Skyline here. You can find it either on our website, or via your search engine of choice.)
Popular Discussions View All (30)
Mar 31 @ 11:51am
Paying for a mod
Jun 11 @ 3:56pm
PINNED: Portal Skyline
Feb 7, 2016 @ 4:29pm
Will you be fighting the Combine?
Turret Cube
< >
GabeTYJ Dec 8 @ 10:43pm 
SpAM_CAN  [author] Dec 5 @ 1:47pm 
Elburninator - I plan on having something up soonish. I've been too busy completing my degree to have a polished set of screenshots ready for a store page.
calDragon345 Dec 1 @ 6:59pm 
Elburninator Nov 26 @ 6:54am 
Can you all at least create a store page for this? I really want you all to Combine (Intentional pun) Half Life with Portal.
Wheatley Oct 21 @ 7:01pm 
This looks so cool!
BlitzSkype Oct 2 @ 9:19am 
Can't wait for this to come out !
minitajfun Aug 5 @ 8:27am 
The Monkey Jul 29 @ 9:02pm 
dreamlandkirby Jul 16 @ 3:41pm 
If this song is made by you,
I'm gonna want this mostly for the songs
MetaByte Jun 27 @ 7:03am 
so is this still coming out or not