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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Mission Improbable 3 - Shaft Mission Improbable 3 - Tunnel Mission Improbable 2 - Rebel base

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!

3 years ago 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!

3 years ago News 4 comments

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

Making good progress!

Making good progress!

3 years ago 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!

3 years ago News 13 comments

Mission Improbable is close to being content complete!

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.
Mission Improbable Full version

Mission Improbable Full version

3 years ago Full Version 36 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

5 years ago Full Version 14 comments

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 This version is outdated, but is still available.

Post comment Comments  (10 - 20 of 229)
Icedwhisper Oct 8 2014 says:

This game, at first, Gave me the error message saying that it can't find background image/materials/console/startup_loading.vtf, Then, When I tried the suggestion about changing the gameinfo.txt, It loaded movie at the start, But then it crashed/went to the desktop. I would really love to play this mod, And I hope the devs reply to me soon...

+1 vote     reply to comment
Icedwhisper Oct 9 2014 replied:

I fixed it! none of the solutions listed here worked for me, so I added the following text to Gameinfo.txt:

title "HALF-LIFE 2 SMOD"
type "singleplayer_only"
"icon" "smodicon"

SteamAppId 220 // This will mount all the GCFs we need (240=CS:S, 220=HL2).
ToolsAppId 211 // Tools will load this (ie: source SDK caches) to get things like materials\debug, materials\editor, etc.

Game |gameinfo_path|.
Game hl2
game_lv hl2/hl2_lv.vpk
game+mod hl2/hl2_sound_vo_english.vpk
game+mod hl2/hl2_pak.vpk
game |all_source_engine_paths|hl2/hl2_textures.vpk
game |all_source_engine_paths|hl2/hl2_sound_misc.vpk
game |all_source_engine_paths|hl2/hl2_misc.vpk
platform |all_source_engine_paths|platform/platform_misc.vpk
gamebin hl2/bin
game |all_source_engine_paths|hl2
platform |all_source_engine_paths|platform

+1 vote     reply to comment
Icedwhisper Oct 9 2014 replied:

I noticed that you could not start a new game if you placed the previous code in Gameinfo.txt. So I did a little editing and it worked! Replace all the code in Gameinfo.txt with the code listed here:

0 votes     reply to comment
Icedwhisper Oct 9 2014 replied:

Sorry, The previous link is wrong, It doesn't fix it, this is the link:

+2 votes     reply to comment
TheUnbeholden Jan 30 2015 replied:

yeah that fix has been around since last year. Its why the vast majority of mods don't have any special fixes. So far Provenance has one major bug with marines unable to be killed by the player, Triage/Human Error/Missing Information require extracting hl ep1 and ep2 files, City 7 Toronto conflict has a broken scripted sequence in the beginning (making you skip the map and missing a fight) and Black Snow doesn't work at all among others.

+2 votes     reply to comment
EddAdrian Sep 25 2014 says:

nevermind i should've checked the comments before

+1 vote     reply to comment
EddAdrian Sep 25 2014 says:

It starting to be really annoying so many mods not working and with problems i got the orange box last month on steam so i can play all the great mods, but surprise only few are working. this one also i enter the game white screen and then i hear the error sound and nothing happens..is there a solution at least?..

+2 votes     reply to comment
Veilleur Jun 24 2014 says:

I'm playing this mod today, and I can say : What a perfect mod ! Beautiful mapping, gameplay is very good. I very appreciate playing it ! Great work ;)

0 votes     reply to comment
Guest Apr 27 2014 says:

I am a member but can't sign in (scattergun).

Anyhow, I had the same trouble mentioned - "Can't find background image material/console/startup_loading.vtf" - and corrected it by using the solution provided by dubigrasu. Replace all text in "gameinfo" in mimp folder with text provided by Pastebin.com link. Copy and paste entire page. It works!

It's a pleasure to play this great mod again!!

+2 votes     reply to comment
Guest Apr 13 2014 says:

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

Icedwhisper Oct 8 2014 replied:

Its in your Steam\steamapps\sourcemods folder

+1 vote     reply to comment
GamerStar111 Apr 9 2014 says:

I installed it and tried playing it but for some reason an error came up said that it couldn't find a menu file, what is the solution to this problem?

+2 votes     reply to comment
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Half-Life 2: Episode Two Icon
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Released 2010
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452 votes submitted.

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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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