What if everything that went wrong on "A Red Letter Day" was not caused by what you thought? What if your teleport ripped a hole in space and time? Now you must travel through time to correct the events and set right your past.

Causality Effect
A Red Letter Day Gone Wrong

  • View media
  • View media
  • View media
  • View media
  • View media
  • View media

Causality Effect has been updated. I have fixed and changed little bugs found in the mod after its release. In other news the mod will be aired in PC Games magizine this month and will be on a DVD disc that comes with your magizine.

Causality Effect
?A Red Letter Day Gone Wrong?

The installer

Full Version 4 comments

Download me to install the game

The Video Trailer

Movies 0 comments

Check out the trailer with in game footage.

Post comment Comments  (10 - 20 of 76)
kalidrone
kalidrone

Extremely amazing idea and story, I LOVE IT, no lie! X3 Can you please tell me if there is a way to save Eli, Barney or Kleiner? I'd truly appreciate it. :)

Reply Good karma Bad karma+1 vote
kalidrone
kalidrone

Help me out here, from what I see on the comments here you can kill either Alyx/Breen at the ending scene but when I get there I have no weapons to kill them with, please tell me how to kill either because after Gordon exits the Teleport room I try to rush kill breen but it's like he isn't even receiving anything from what I fire at him, please help me out here, please. D:

Reply Good karma Bad karma+1 vote
kalidrone
kalidrone

YES! I managed to get the different endings! Now I know how to get them as well! X3 To all who are looking for the different endings in this story: Please be advised that after your brief meeting with Gman you should HIGHLY take heed of his Very Words because right when you load into the rooftop battle Alyx Vance and Wallace Breen make a break for it and it's up to you to see who you will kill be be warned as there are some deadly Combine Elites loosely guarding them but there's only around 2-3 at most and THAT's when you can decide what ending you want, just wanted to say this for all of you frustrated and confused on how to get the different ending as I was, truly! XP lol So you must move with as much haste as possible while staying alive from the Combine Elites while taking either Breen/Alyx out, good luck. :)

Reply Good karma Bad karma+1 vote
kalidrone
kalidrone

Also I just want to say that this reminds me A LOT of Breakdown with Derrick changing the time line, so this is such an awesome story, thank you for this, it has made me very happy. XD

Reply Good karma Bad karma+1 vote
superstepa
superstepa

Doh , In the beginning , when there is a combine door , and a combine "Plane" flies , I alwayshet killed , because this rebel CANT KILL THIS DAMN THING

Reply Good karma Bad karma+1 vote
megaman951
megaman951

hmmm when I start the mod Alyx just stands there...I assume this is because of the huge update they did to HL2 ?

Reply Good karma Bad karma+1 vote
MizoreJedi
MizoreJedi

The same thing happens to me, when I write the first map in the console, because if I go to New Game, the game returns to the menu.

Reply Good karma Bad karma+1 vote
ninjatwork
ninjatwork

This was one of the best mods I've ever played in respect to the HL2 story line. I don't even know what else to say other than that I gave it a 10.

Oh, and I appreciate the small download size too. =D

Reply Good karma Bad karma+1 vote
johnnyB96000
johnnyB96000

Did anyone notice that if you draw in a Big black zombie thing into a barnacle the game always crashes, i guess this is due to the fact there is no sprite or sequence in the game so as to which the zombie dies in this way. Nor is there in HL2 to my knowledge

Reply Good karma Bad karma+1 vote
Rallymen007
Rallymen007

Just finished this mod, and I really enjoyed playing. Mapping is nice, cut scenes are good, but the timeline is kind of weird, all those teleports confused me :)

But, how do you get other endings ?

Reply Good karma Bad karma+1 vote
ig
ig

Yuo kill breen or alyx or both or neither

Reply Good karma Bad karma+1 vote
PsiKO911
PsiKO911

OK but how do you kill them?

Reply Good karma Bad karma+1 vote
johnnyB96000
johnnyB96000

you just run up to them at the last scene and shoot them with a shotgun as quick as possible, both one or the other or none gives 4 possible endings.

Reply Good karma Bad karma+1 vote
Post a comment

You are not logged in, your comment will be anonymous unless you join the community. Or sign in with your social account:

Icon
Half-Life 2
Creator
Contact
Send Message
Homepage
Onboarderror.com
Release date
Mod watch
Start tracking
Share
Community Rating

Average

8.1

101 votes submitted.

You Say

-

Ratings closed.

Style
Embed Buttons
Link to Causality Effect by selecting a button and using the embed code provided more...
Causality Effect
Statistics
Last Update
Watchers
91 members
Downloads
2
Articles
1
Reviews
5