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

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0 comments by OnboardError on May 26th, 2006

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?

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The installer

The installer

May 7, 2007 Full Version 4 comments

Download me to install the game

The Video Trailer

The Video Trailer

May 26, 2006 Movies 0 comments

Check out the trailer with in game footage.

Post comment Comments  (0 - 10 of 74)
rcminor
rcminor Aug 12 2013, 3:35am says:

Well it's getting late and I've discovered 2 of the endings. Pretty good overall, I did enjoy playing it for the most part. Agree that a couple of parts were over the top, the opening street battle is ridiculously hard, even on easy. I don't know if we're supposed to make use of the Combine rifle in the middle of the street near the gate, but it's too close if so -- the goons just swarm in to the sides where you can't shoot them, and you don't even see them move in. And it kinda made me uncomfortable that your first buddy there has to get shot before you can take the RPG and finish off the gunship. I played through that sequence more times than I can count, and I think I saw him get off one round -- once. Couple other remarks,I'll put them in the Review with a spoiler alert.

+1 vote     reply to comment
Vanseth
Vanseth Feb 26 2013, 11:11am says:

Good mod. I am waiting for 2. part

+1 vote     reply to comment
Crow727
Crow727 Aug 20 2012, 5:37am says:

*SPOILERS AHEAD*
So as far as I can tell, the teleport takes you into a parallel universe where Alyx is working together with Breen.
*ENDING SPOILERS AHEAD*
If you kill them both, the universe corrects itself by taking you back to your universe?
*SPOILERS END*
So that's my take on this mod anyway.

+1 vote     reply to comment
Skizzo
Skizzo Jun 20 2012, 8:23pm says:

Nice ideas, but poor execution: gameplay is sometimes confused and/or meaninglessly hard ("invincible" helicopter, Antlion Guard who cannot be hurt by shooting at it...), and the ending is pointless. Yes, you have four endings, but there's no clear connection between your actions and the outcome.
Technically good, but kind of "kiddie" gameplay (more action than brain).

+1 vote     reply to comment
locotto
locotto Mar 2 2011, 12:04am says:

can i play this game whit ep1?
thanks

+1 vote     reply to comment
Null-Entity
Null-Entity Feb 3 2011, 8:19pm says:

A wonderful short bought of action with some interesting twists on the HL2 characters/story opening.

+1 vote     reply to comment
kalidrone
kalidrone Jan 1 2011, 3:31am says:

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. :)

+1 vote     reply to comment
kalidrone
kalidrone Jan 1 2011, 6:28am replied:

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:

+1 vote     reply to comment
kalidrone
kalidrone Jan 6 2011, 11:16am replied:

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. :)

+1 vote     reply to comment
kalidrone
kalidrone Jan 6 2011, 11:20am replied:

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

+1 vote     reply to comment
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Platform
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OnboardError
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Release Date
Released May 7, 2007
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