Mission Improbable is a singleplayer mod for Half-Life 2: Episode 2. In it, Gordon Freeman is tasked with re-activating a Resistance listening post. From there, things quickly escalate.

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Before reading on, please click here so that you can start your download! It's been a long journey to finish this project. With the first map being made and released back in 2009 and the second map being released in 2010, it has taken another 2 years for the project to be completely wrapped up.

Initially I intended to just create the final map and do some script and minor graphical upgrades to the previous levels, but while having a beer with Rick one day he suggested that he could help me out with some art to make the levels even more awesome.

Mission Improbable 1 - Broken floorMission Improbable 2 - Rebel base

"It'll only take like 2 months" he said "we'll make some new rocks and stuff, it'll be easy!" That was back in December. From then until now we've done almost complete rebuilds of the old levels, replaced almost all Half-Life 2 content with original art, and created 2 new levels as well! We have around 300 new textures being used in the mod, along with 300 new models.

Mission Improbable 3 - TunnelMission Improbable 3 - Shaft

It's a great feeling to finally be able to release Mission Improbable. It has been a lot of late nights and long hours to get it done, and we sincerely hope you'll enjoy playing it. In case your download hasn't finished quite yet, then you can take a look at the launch trailer below.


The download is STILL not done? Then check out this videoreview that Valvetime.net did! They reviewed a pre-release version of the mod, and awarded it an A-!


By now I hope the download is done. Again, we hope you like it, now we will go get some well-deserved rest!

Final stretch of development!

Final stretch of development!

News 7 comments

Mission Improbable is in the final stretch of development!

Another week passes, with lots of progress!

Another week passes, with lots of progress!

News 4 comments

A week of great progress, and a preliminary release date!

Making good progress!

Making good progress!

News 4 comments

The mod nears completion! A general update on the progress of the three maps and the new art.

Almost content complete!

Almost content complete!

News 13 comments

Mission Improbable is close to being content complete!

Mission Improbable Patch - Source SDK 2013

Mission Improbable Patch - Source SDK 2013

Patch 8 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...

Mission Improbable Full version

Mission Improbable Full version

Full Version 38 comments

The full version of Mission Improbable, released in July 2012! A self-extracting .exe, all you need to do is run it and it will install the mod correctly...

Mission Improbable Part 2

Mission Improbable Part 2

Full Version 14 comments

Mission Improbable Part 2, released in May 2010. This version is outdated, but is still available.

Post comment Comments  (0 - 10 of 236)
Delta_07_sev
Delta_07_sev

Hi there,

first of all: Awesome work on this mod!!!

I had a few problems getting the mod work, because as stated in the readme I should turn the Source SDK Base 2013 Singleplayer Beta option to "incoming", but I didn't have that option. My first thought was that perhaps the Beta they refer to in the readme is no Beta anymore... Still it didn't work so finally I turned the Beta option to "upcoming" and it worked like a charm. Nothing else had to be done for me!

I hope that helps some of you,
have a nice day.

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Guest
Guest

Hey, I really like this mod. But I was wondering if you were thinking about trying to get this on the steam store?

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willysabaku
willysabaku

Please help. I can't load the game. I have the little image with the sound at the beginning and then it's crash to desktop with the message "could not load library client". I have replaced the text in gamleinfo.txt and verified file integrity but nothing changes.

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insta Creator
insta

Hi! Just wanted to let you know that I will be releasing an update to the mod that fixes the loading error introduced in a Source engine update a while back. Until then, the workaround is to open up Gameinfo.txt found in the mod folder, and replace the text there with this:
Pastebin.com

Thanks to Icedwhisper for the workaround.

Hope you enjoy the mod!

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NugsKillah
NugsKillah

I can't get this hall of fame mod to run now...loads to white screen then I get the "startup_loading.vtf is missing" error message. Is there a fix for this? Are you planning on patching this mod to run? Thanks, one of my favorites...

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Gamer#1
Gamer#1

WHY CANT I GET PAST THE FIRST SCREEN?! IT SAYS "startup_loading.vtf is missing." WTF?!? WHY IS THIS IN EXISTENCE?! HOW CAN I FIX IT?! I JUST WANNA PLAY THE F***ING GAME!!!

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Guest
Guest

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Mateos
Mateos

Good evening,

I've reached the map where you get passed a Combine sniper nest, then triggers manhacks when activating an elevator aside a train bridge.

There's one of the two yellow security gates which doesn't open after the elevator get down, any idea?

Edit: There -> magnarj.net/images/mimp/mimp23.jpg

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Brimnes
Brimnes

I used cheat code "noclip" to go through the lift gate and then disabled it.

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Brimnes
Brimnes

Have had the same problem. I guess, the three hunters should come also (according to the walktrough videos on youtube), but they didn't come. I think it's a glitch :(

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Half-Life 2: Episode Two
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Highest Rated (8 agree) 10/10

It's like an Expansion Pack for HL2. And it's not one of those cheap Mods, this campaign is so good it could've been in the original game.

Oct 16 2010 by Sgt.AS

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