When the Combine raid your Resistance hideout, you are forced to flee into the depths of the Outlands. But with Overwatch forces hunting you down, and the local fauna out to get you, danger is always just around the corner. Play through four chapters of Half-Life gameplay, exploring new locations, meeting new characters and uncovering lost secrets.

  • View media
  • View media
  • View media
  • View media
  • View media
  • View media
RSS Articles

Half-Life 2: Uncertainty Principle is out now! It's available exclusively to download over at RunThinkShootLive.com (although it will be uploaded here too after a timed period).

When the Combine raid your Resistance hideout, you are forced to flee into the depths of the Outlands.

But with Overwatch forces hunting you down, and the local fauna out to get you, danger is always just around the corner.

Play through four chapters of Half-Life gameplay, exploring new locations, meeting new characters and uncovering lost secrets.

2015 09 26 00011

2015 09 26 00024

2015 09 26 00040

Hope you enjoy playing!

Release Uncertainty

Release Uncertainty

News 6 comments

The mod Uncertainty Principle is not cancelled or abandoned, it is safe on my hard-drive and mostly complete. Unfortunately I'm just not going to have...

Long overdue update

Long overdue update

News 2 comments

An update on the development of Uncertainty Principle.

All about Uncertainty Principle

All about Uncertainty Principle

News 2 comments

Here's some more information about this mod for you.

RSS Files
Uncertainty Principle 1.0

Uncertainty Principle 1.0

Full Version 2 comments

The full release version of Half-Life 2: Uncertainty Principle in .zip format.

Comments  (0 - 10 of 43)
darksniper45
darksniper45

I have problems with the third map, it is about the lighting is the typical problem of hdr and fullbright of half life 2, but try fix it but i get the same error, some help.

Reply Good karma Bad karma+1 vote
Guest
Guest

When I load the mod in Steam, it shows a pink and black checkerboard; plus, when I click new game, it only shows the first chapter, and does nothing when I try to play. I tried adding Ep2's materials and models folders to the mod, but that didn't help. Any help would be greatly appreciated! Thanks!

Reply Good karma Bad karma+1 vote
Guest
Guest

This is a really fun and cool looking mod. I know it's currently exclusive with RTSL. But I think it would be cool to see this eventually put on steam.

Reply Good karma Bad karma+2 votes
H1PnOT1C
H1PnOT1C

Awesome mod.

Reply Good karma Bad karma+1 vote
Kravik
Kravik

I do not get any sound.. The sound plays at start with the valve logo.. Then it is dead silent.

HL2 and both episodes has no sound issues.

Other MOS's have sound as well..

Reply Good karma Bad karma+1 vote
thedeadcamper
thedeadcamper

I wish I played this closer to release. It was a solid experience and I liked it.

So... it is possible to get the gnome from the very beginning all the way to the end, though there are some kind of buggy parts that make that experience hard, and the ending doesn't seem to acknowledge anything is different. Are there ANY Easter egg for doing that or am I just being extremely obsessive at this point?

Reply Good karma Bad karma+1 vote
Guest
Guest

This comment is currently awaiting admin approval, join now to view.

asw01
asw01

why is the Scenes folder empty? my console just says "Scene 'scenes/rhett_hideout_madeit.vcd' missing!" whenever it comes to a location where a Scene is supposed to play, i checked the mod folder, and the only thing in there, is a scenes.image, whats going on?

Reply Good karma Bad karma+2 votes
CaptPatrick01
CaptPatrick01

Well, if the .vcds are in the Source files download on the website, we're chip out of luck. The download link of that has gone down without so much as a notice, and backups are ungoogleable.

Reply Good karma Bad karma+1 vote
DarkShift
DarkShift

Well the last map is also beautiful but the last fight is really a disappointment.

9/10

Reply Good karma Bad karma+1 vote
Post a comment
Sign in or join with:

Only registered members can share their thoughts. So come on! Join the community today (totally free - or sign in with your social account on the right) and join in the conversation.

Follow Report Profile
Icon
Half-Life 2: Episode Two
Creator
Contact
Send Message
Release date
Mod watch
Follow
Share
Community Rating

Average

7.9

25 votes submitted.

You Say

-

Ratings closed.

Style
Embed Buttons
Link to Uncertainty Principle by selecting a button and using the embed code provided more...
Uncertainty Principle
Statistics
Last Update
Watchers
130 members
Files
1
Articles
4
Reviews
9