This game is not related to the story of the Half-life2.
Something goes mad because the human race failed in the
experiment, and it connects with another world.
The resident in the another world is crazy due to the mistake.
We should restore the situation.

User Posted Image

As for this game, almost all are made only from the basic function of HL2.
Having fiddled with the code for the chapter unlock is the only exception.
You will learn the degree of freedom of the expression of HL2 is very high.

K.S.(Koumei satou)

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RSS Articles

I released the test patch ver.2 for the CUtlLinkedList Overflow error.

Please try this file, when a problem has not improved, even if it tried "Test patch 1 for CUtlLinkedList Overflow" .
If you are not confronted with this error, the patch need not be used.

:Attention:
To our regret, there is no guarantee that the problem solves by this
patch.
Refer to readme for details.

patch for the CUtlLinkedList Overflow error

patch for the CUtlLinkedList Overflow error

News

I released the test patch for the CUtlLinkedList Overflow error. After all, I was not able to specify a detailed cause. But, I have decreased entity...

Version 1.0c released

Version 1.0c released

News 2 comments

I released the patch. As a result, the version becomes 1.0c. I fixed some stucked parts, and fixed the game balance. Please download the ks_mop_v1b-v1c_update.zip...

Thank you!

Thank you!

News

Thanks for your voting MOP for Mods of 2005! I'm planning to release a patch which will address a few glitches while tweaking some scenes. "Thank...

Screenshots update

Screenshots update

News

Four new Screenshots were added.

RSS Files
Mistake Of Pythagoras Patch - Source SDK 2013

Mistake Of Pythagoras Patch - Source SDK 2013

Patch 17 comments

This patch fixes most issues related to engine branch incompatibility and is designed to run using the latest "Beta" of Source SDK Base 2013 Singleplayer...

Test patch 2 for CUtlLinkedList Overflow

Test patch 2 for CUtlLinkedList Overflow

Patch

:Attention: To our regret, there is no guarantee that the problem solves by this patch. Please try this file, when a problem has not improved, even if...

Test patch 1 for CUtlLinkedList Overflow

Test patch 1 for CUtlLinkedList Overflow

Patch

:Attention: To our regret, there is no guarantee that the problem solves by this patch. Please tell it to me if the problem still happens. Refer to readme...

Mistake Of Pythagoras v1.0c

Full Version 15 comments

Please copy this "MOP" folder into your Steam/SteamApps/SourceMods folder. (Please make it in SteamApps if there is no SourceMods folder. ...

MOP update patch 1.0b - 1.0c

Patch

The version becomes v1.0c. I fixed some stucked parts, and fixed the game balance. Please download the ks_mop_v1b-v1c_update.zip file if you have already...

Mistake Of Pythagoras 1.0b

Full Version

Please copy this "MOP" folder into your Steam/SteamApps/SourceMods folder. re-start Steam. It is a success if "Mistake Of Pythagoras&quot...

Comments  (0 - 10 of 236)
Guest
Guest - - 687,512 comments

i cant start the game when i click in new game there are no chapters for me to select wtf do i do

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long_chin_man
long_chin_man - - 1 comments

shoutout to Radiation Hazard and his very soft european voice for attempting to understand a mod that literally abbreviates to "mop"

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cornishpasty7
cornishpasty7 - - 4 comments

can we get an mmod version of this?

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Guest
Guest - - 687,512 comments

someone has to do a 2020 clean version, such a great mod

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ZippyS2
ZippyS2 - - 263 comments

Full gameplay

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wavelength121
wavelength121 - - 15 comments

crashes on startup with error: "can't find background image materials"

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Guest
Guest - - 687,512 comments

same here

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Cyber.Shadow
Cyber.Shadow - - 56 comments

I am stuck out in a field (at the villa), with Barney, after defeating the Anthlons.
We're just standing there and nothing happens.
I watched a walk-through as to what to do, but something should happen automatically, and it's not....help me?

Reply Good karma Bad karma+1 vote
FlippedOutKyrii
FlippedOutKyrii - - 3,489 comments

I managed to get this running by downloading MOP 1.oc, placing the MOP foldier on my desktop and changing the gameinfo to 215 and then putting the MOP folder in my sourcemod folder.

I tried playing a previously stored copy of MOP and fiddled with the gameinfo several times, resulting in countless errors. But simply downloaded a fresh copy and changing one line in the gameinfo before putting it in my sourcemods folder got this bugger working, working scenes and all.

I've heard other people say the 215 fix didn't work for them. Maybe this method will work for them, it did for me.

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Sanator
Sanator - - 53 comments

Stuck at the chair in the beginning and I've already tried the SteamId 215 fix. Does anybody know of any other fix that works?

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Guest
Guest - - 687,512 comments

Look at the computer and press E.

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