Title:________Leon's "From Coastline to Atmosphere" (LeonHL2-2)
Description:__15 sp-maps with a story that links them together.
Release Date: _23 07 2006
Author:______Leon Stephan Brinkmann ‘SPY’ (Mapping)
_____________Peter ‘Baltic.Forever’ (Additional Mapping)


This mod continues the story where Half-Life 2 finished and offers one possible scenario. After the big explosion you fall to the ground and are very badly injured. Some people find you and take you home to a small village outside the city where the citadel was built. After 3 months you’re strong again and want to fight on. You have never seen Alyx or any of the others since the explosion. But you try to find new people that will fight with you against Breen. Nobody wants to help, some are afraid, others think that Breen has learned his lesson and won’t start again. It also seems that most of his organisation was lost in the explosion. Then you hear that along the coast Breen is starting again and trying to take control again. So you decide to go to the coast. There you take a little boat and go along the coast so the Combine won’t notice you coming.

leon brinkmann.


You can find 2 walkthroughs of the "C to A" Source Mod on;


For the short version visit;

For the detailed version visit;

You can also click on "Properties" in the Main Steam Console to access both versions of the online Manual (Walkthrough).


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Blog RSS Feed Report abuse Latest News: Fix for crashes due to Steam update !!

0 comments by SPY-maps on Mar 19th, 2011


Extract this mod to you're SourceMod folder and click on the Coastline to Atmosphere folder, find the notepad called Gameinfo, inside and change the SteamAppld 220 to 215, save it and that it. You can play it without crashing.
This info does count for all HL2 excisting mods out there,
i know this is quit old info by now but i decided to add it here again anyway because there are still a lof of people that don't know this.
So, please do what is described above, it just takes one second to do so and it does fix everything!

should you have questions of any sort then please do contact me and i will help you out.
thanks for downloading!

please check all my other HL2 (ep1+ep2 sp-mod here if you are interested;
(only Hypercube was not made by me);



Media RSS Feed Latest Video
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all 20 Coastline to Atmosphere map (.vmf) files.

all 20 Coastline to Atmosphere map (.vmf) files.

Jan 8, 2014 Singleplayer Map 0 comments

Here you have all 20 original map (.vmf) files of Coastline to Atmosphere.

Leon's Coastline to Atmosphere updated

Leon's Coastline to Atmosphere updated

May 27, 2012 Full Version 2 comments

Leon's Coastline to Atmosphere, this release is updated to run on Source SDK Base 2006.

Leon's Coastline to Atmosphere

Leon's Coastline to Atmosphere

Oct 7, 2006 Full Version 7 comments

IMPORTENT! FIX; Extract this mod to you're SourceMod folder and click on the Coastline to Atmosphere folder, find the notepad called Gameinfo, inside...

Post comment Comments  (0 - 10 of 157)
SPY-maps Creator
SPY-maps Oct 30 2014, 1:50pm says:

I am very sorry that i reply so late to all comment here, but i have made so many mods that it is hard to follow all comments that are made about them. Even more so because i am in the final stage of developing my latest mod called Episode 3; The Closure.

That said, i will try to answer now, even when you are probably not reading it anymore. Maybe other people have something with reading it.

FIRST ABOUT THE BUG WERE YOU GET THE JEEP AND THEN THE GAME CRASHES; Don't know why this happens, it never did when the mod was released, it is probably caused by a Valve update that was released after the release of the mod. Because the level end there at the same time it is best to just manually start the next level through console, you won't miss anything this way and it is the only way to play on for now. I am thinking about going over all my mods ones my new mod is released and make them playeble again.

About playing this mod, you only need to own HL2, not ep1 or 2.

And many thanks for your constructive critisism.
I always want to hear what people say.
Its true, this mod is to hard and there are indeed many beginners mistakes in development. But this was my first large mod with the source engine and therefore i made quit a few mistakes. My latest mod will be much better, i promise.


+1 vote   reply to comment
EddAdrian Sep 8 2014, 6:15pm says:

(second comment)
BTW i know you're trying to make these mods really long, and even though it's much fun, in my opinion if kinda ruins the feeling of a SP campaign when it is to streched out and delayed, it doesn't feel natural.

Also some glitches and lag at some points, especially when i need to chase down g-man but i guess it's quite normal. I know you owe me nothing and shouldn't care about what i say but i'm not hating i am just trying to say some stuff that maybe can be fixed so we the HL fans can enjoy these mods a lot more ! I don't know if anyone is gonna read this or you Leon, but i hope you can minimize these mistakes in "The Closure" as i am really looking forward to it! - Half Life Addict.

+1 vote     reply to comment
EddAdrian Sep 8 2014, 6:13pm says:

Great mod sir, but in the same time the most annoying mod i have ever played. i'm just gonna give you some constructive criticism for you future mods maybe (played on normal):

- The positioning of the soldiers/enemies in some scenes is pretty bad because they can get a lot of free shots on you without even seeing them or they just appear too many, so you take a lot of damage, in many cases you die in a few seconds.Knowing that the game is really hard on normal.

-in a SP you need to have a lead and continuity and in this mod in some cases you can like go to 2 places or do 2 things and if you go to the main place to advance, you can not go back to maybe pick up an important weapon or something, and that second place is not that obvious most times.

- Puzzles are either too obvious (which i don't mind) but some also really hard to solve at times even with those indications, the ways to reach those places are hard to find.

- I actually had this problem 2 times. you reach a place where it starts those indicating "cutscenes" but there are still soldiers firing at me and i'm dead when that is over.

- You don't let enough reaction time at some points, you literally have to load the game a lot of times because the "surprises" kill you really fast and there is nothing obvious that you need to do.

- Way too many places that can be accesed where you can get killed instantly or almost and they don't really make sense.like when you need to follow that blue laser and you need to go down with that small elevator but you can also jump on a few metal bars and then when there is like one meter to get down, if you jump you die instantly. (had to write my whole stuff in 2 comments lol)

+1 vote     reply to comment
faisy63091366106661 Jul 16 2014, 9:25am says:

Do I have to install Source SDK Base 2007 from tools to play this game or I should I have to own Half Life, Half Life 2, Half Life 2 ep1 and Half Life 2 ep2? Please tell me.

+1 vote     reply to comment
0b1der Jul 13 2014, 3:22am says:

wow. if only i've conspired to this when it was coming soon... :(

+1 vote     reply to comment
levit Jun 1 2014, 5:47pm says:

This is a great mod, but I ran into a problem way later into the game. I already have the jeep, and I go into this room to activate this computer, which makes the nearby gate open so that I can progress with the jeep. Then the woman starts talking right after I activate the computer. She gets as far as saying, "243" then that last line glitches a few times, so she says, "two hundred two hun two hun two hun two hun", and then my game crashes. Does anyone know if theres a way to fix that? I haven't had any problems up until that specific part of the game. Any help would be apreciated.

+1 vote     reply to comment
SPY-maps Creator
SPY-maps Jun 30 2014, 7:31am replied:

Sorry Levit, that i comment so late, you probably have stopped playing the mod by now. Its the first time i hear of this problem and i wouldn't know what to suggest other then start the next level manualy. Or fly past the part were the mod crashes with the no clip command. please do pm me when you have any more questions.


+1 vote   reply to comment
SPY-maps Creator
SPY-maps May 24 2014, 12:39pm says:

Sorry guys that i haven't commented here for so long but i have been very busy with my latest mod that soon will be released, called Episode 3: The Closure. You can find it here on Moddb also;


I am glad this older mod is still liked so much by so many people. Should you be interested in all my HL2 (and eps) sp-mods then please check here;

And check my site for all my sp-mods for HL2 and other fpshooters;

About updating this mod. Funny you mention that because i have planned to do so, together with all my previous sp-mods ones i have finished my latest HL2 ep2 sp-mod.


+1 vote   reply to comment
Guest May 4 2014, 8:52pm says:

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aussiemuscle Apr 26 2014, 5:06am says:

I quite liked this mod. it's a good length with some good designed levels and enemies continually pop in to keep you company. one problem was later in the game, it's a bit too long between loosing my suit and getting it back (during which time i couldn't change weapons or see the HUD).

+1 vote     reply to comment
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Released Jul 22, 2006
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