Update (August 2006)

This exceptional mappack has now been released as a full mod and all other downloads have been removed. If you are having trouble getting the old files to work or are new to this pack then you should download this mod. The link can be found under the Basic Details section.

Story

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 organization 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.

Resources
Interviews
Walkthroughs
Reviews
Basic Details
Awards

Leon's Coastline to Atmosphere is a HALL of FAME entry

Screenshots

Click on the thumbnails below to open a medium size image.

Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
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Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Single Player First Person Shooter Maps and Mods for Half Life 1, 2 and 3
Reader Recommendations
42 recommendations, average score: 4.69 (out of 5), standard deviation: 0.5
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Total Downloads

Please note: These statistics are valid from December 2010

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Meta Review Data
Statistics based on 1 comment(s) with meta review data.

Installed
Using MapTap: 0 Users
Manually: 1 Users

Time Taken
Average: 3 Hours, 30 Mins
Shortest: 3 Hours, 30 Mins by MisterAddy
Longest: 3 Hours, 30 Mins by MisterAddy
Total Time Played: 3 Hours, 30 Mins
Published

8th August 2006

Categories
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Mod not working?
An update by Valve to some Source engines has caused a number of mods to stop working properly and give errors. Please visit my Get Mods Working post for more details.
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536 Comments
  1. smallengineguy 6405 comments

    8th March 2010

    As wit hthe very first post “the control of weapons choice and the displaying of health information is no longer available”, I also have the same problem. On level 10, I can’t choose weapons, my health does not show, etc…Is there any fix for this?

    • Jasper 679 comments

      8th March 2010

      Afraid not. Leon ‘Spymaps’ Brinkman deliberately designed that way.
      Irritated me too. On replays I stop at the end of the power plant map.

      • smallengineguy 6405 comments

        9th March 2010

        That’s stupid. The game was GREAT until that point.

        • Jasper 679 comments

          13th March 2010

          Sorry smallengineguy, I got that wrong. I thought you were near to the end.
          At level 10 you get re-weaponised and suited so play on.

          It’s only at the last level, 15, that you permanently lose the HEV.

  2. Chris 2 comments

    21st March 2010

    This was a really really good mod, and I can’t wait to play Strider Mountain now that I know it’s by Leon as well. There were sections of the game that I found frustrating, but there were others, such as the duel with the two striders, the hallucination scenes, and the room filled with headcrabs, that made me keep playing.

    However I seem to be stuck on the 14th map where you kill G-man and Breen. I’ve killed both of them, and I found the walkthrough that tells you to go back to the terminal in the office and use it to open the door, but the terminal doesn’t seem to work. When I try and use it I get the little locked console beep, and when I run down the stairs again the door is never open. So what am I doing wrong that I can’t get the door to open?

  3. smallengineguy 6405 comments

    24th March 2010

    OK! Made it to the end, now Im in the room in the city. Is there more to go? It wont let me out of the room.

  4. smallengineguy 6405 comments

    24th March 2010

    Chris, that console should open that door!

  5. Chris 2 comments

    25th March 2010

    Well, I just did a little cheating and nocliped through it. The last part was pretty good even though the HEV disappeared for no given reason. I wish that last part had been a bit longer. I couldn’t tell if the ending was setting it up for a sequel or if it was supposed to mean that you had killed all the remaining combine?

  6. Zekiran 200 comments

    27th April 2010

    Play It Later

    While I’ve played this mod twice all the way through, I would have preferred THREE mods to come of this:

    The “coastline” portions were thoroughly wonderful. I LOVED them. The maps were beautifully constructed and a pleasure to wander around. Good puzzles, good fights, very balanced.

    The “Hallucinogen” portions were worthy of a side trip mention, but weren’t really in keeping with anything in the rest of the mod. They were fun, entertaining diversions, but not what I’d want to include in a ‘pro’ mod. One thing that really harmed this was that I had fallen off one portion of the ‘floor’ at one point, and was unable to return to the proper location. I had to start over since there was no ‘oops’ correction anywhere. Also, losing your health / hud was very, very unnerving particularly when you did have a weapon later, I guess there was a reason but it didn’t appear anywhere in the game that I could tell.

    The “Atmosphere“… here is where it unfortunately falls apart for me. SOME of it was good – again the map making itself was good, but there were things that bothered me:

    Why does a space station have concrete walls and cells? The efforts on the ground portions didn’t seem to carry through on the ‘space’ areas with the same thoughtfulness. Where are all these guys coming from? And again, there were areas where if you wound up landing somewhere you shouldn’t have been there was NO way to correct it, having to start from a save again.

    I enjoyed some of the puzzle-type areas in the Atmosphere section, but both times I’ve played, I’ve had to noclip around and try to beat the ending. I’ve read that yes, its theoretically possible to do what’s needed in time to finish properly, but… seriously? I can’t see myself being able to do so, pretty much ever. That kind of steals the wind from my sails and gives me a bad taste in my mouth about the whole mod. I wish that the ending portion wasn’t so very, very very hard just for timing, since it would otherwise be a terrific end to the mod.

    So definitely PLAY IT, but be aware that it’s got its share of difficult flaws, though that won’t stop me from playing again.

  7. s.anchev 230 comments

    6th June 2010

    Play It Later

    This is overall… an incredible mod : it’s long, it has various environments, a great finale, many weapons, many explosive and thrilling moments…
    But :

    1) TOO LONG!!!! My god, it was almost longer than HL2 itself!!!
    Sure, it could be good for a mod to have a great lifetime but :

    a) The whole buggy level was just having a great weight chained to the feet… I mean, for near 100 times, we just advance 10 meters, then have a rush of Combine, then after their death, open a door for the buggy, and doing that again and again!!! I would have gained nearly an hour going through the road at feet…

    b) What the hell with this system to go through??? I mean, I’m blocked at point A, and the only way to open it is to go back for Combine to open a door at point A…!!!

    But still, there a numerous points of action, and despite the overall boringness of fighting hundreds, perhaps thousands, rush of manhacks, the overall apocalyptic tone of the final, and the pleasure to kill 2 of the “important persons” of Half-life, was fun…
    There is also the genius sequence of the “dreams”, Max Payne-like, really crazy and entertaining…

    Soooo many defaults, but also soooo unique qualities… But, overall, too long… A fan should play it while having many nights free… Cuz’, it’s long, but addicting…

    • Dusty_Lions 251 comments

      11th September 2010

      a) The whole buggy level was just having a great weight chained to the feet

  8. Anon_222326 6405 comments

    10th June 2010

    CTA Game crash since steam update.MORONS!.. It wasn’t broke why did they fix it?

    I can get to where you steal the jeep, get through the gate, but when the next level change comes it just stops responding. Any ideas? I’ve loved this mod and played since it was released. Seems many mods no longer work at all or run poorly, crash and now have a plethora of problems. FRUSTRATED! ANY help or suggestions are greatly appreciated.
    LONG term Leon fan
    Dusty

  9. Fluorescent 3 comments

    9th September 2010

    Personal Favourite

    I lol’d at the stripped soldier with the jetpack, shooting lasers out of his head.

  10. Dusty_Lions 251 comments

    11th September 2010

    Personal Favourite

    This is EPIC.. I’ve played this one too many times….working through it again now that it is working thanks to the fixes posted.. This mod is a keeper so burn it to a disk (can be done in the zip file) and store it just in case.. MOTY material!.. Download it now if you haven’t and play your freakin arse off!..

  11. Hec 966 comments

    2nd November 2010

    Play It Now!

    Will give this Leon’s map i played recently, (yep i know it was from 2006 but till now i played it!) a play it now recomendation, because this map i could say it was like “reading” Leon’s autobiography, i mean, in this mod we can see lots of elements that leon’s improoved on their further mods SM and FPD mods.

    The mod started ok but in a personal opinion just ends in a horrible complicated way and besides kind of awful i hate the thing of seeing the last scene sequence and credits and just after be into another battle… but i mean this is leon, he likes to put us as players into his head and just follow it!

    Anyway, if u like to understand some glimpses of how leon started his moding “carrer” this mod is just ESSENTIAL, also very in a clasic moding style of Cmb and HL schemes, leon still didn’t have his kind of canon modding style back then, about new textures and skin weapons.

    So this is a basic mod but not a classic, so if u haven’t played it u could do it anytime

  12. Duke 6405 comments

    14th November 2010

    I have the same problem with the jeep, I’ve edited the file as suggested, but it still won’t play past that point…oh well…

  13. OG Loc 66 comments

    10th December 2010

    Play It Now!

    GREAT MOD!


    Some of the areas you’re gonna be at in the game is gonna be in Final Project Diary mod.

    • OG Loc 66 comments

      20th January 2011

      One more thing, it’s pretty cool to have music from different games in here! I haven’t seen a single citizen in the city of the island though.

  14. Reuben 33 comments

    11th June 2011

    This mod is crashing for me when loading the map leonHL2-2c (when I drive off out of the first little combine town area). I have replaced the SteamAppId in gameinfo.txt and it is still doing this. Does anyone know how I can get it to work?

  15. brianthesnail 93 comments

    28th July 2011

    Personal Favourite

    whay can i say …. leon is in my opinion the best modder/mapper of half life 2 there is….. and coastline to atmosphere is proof of this …
    the amount of work thats gone into this is astounding…. however when i recently played this mod it crashed mid way …. this has nothing to do with leon… and is probally due to one of valves updates ( which has destroyed other excellent mods )
    knowing this wouldnt you think valve would release another update to fix these issues…. i mean these mods and maps were made using their hammer editor so they are responsible in a way
    ( does anyone know how you can fix this error/crash ) ……
    apart from that this is a amazing mod …..

  16. Blue Lightning 193 comments

    25th December 2011

    Think Twice

    Not my cup of tea. The driving sections are ridiculous, some of the routing is much too “busy” for vehicles. Some of the maps archtecture was plain, and some of the construction made no sense. A touch of Combine-ites as well. My advice: pass

    ReplyEdited at 4:54 PM, 25th December 2011
  17. Dirk 27 comments

    16th May 2012

    Personal Favourite

    I really like Leon’s work and thoroughly enjoyed this mod. I’ve played it twice so far, but will replay in the future.

  18. Andrew 57 comments

    24th June 2012

    Personal Favourite

    I haven’t played this for a couple of years, and now it crashes. Yup, I changed the SteamID thing to 215 in gameInfo.txt but it doesn’t help. The crash comes after you get the car and run it up the mountain between map 2-2b and 2-2c. Anyone have a fix? I looked for other patches but found nothing. This is one of my all-time favourite mods and it’s a shame. I assume Steam screwed it up with some sort of new software.

  19. MisterAddy 266 comments

    3rd April 2013

    Maybe?

    I downloaded the mod from ModDB because I couldn’t get any of the links provided to work

    Boy, this mod has not aged well. Putting aside engine problems (when I first played the HUD was broken), there were loads of things that were surprisingly dated for one of the Hall of Fame mods.

    Firstly the positives. The first few levels are really cool, and they have a nice Coast ambience to them as well as a good balance to the combat. The introductory sequence sets up the plot quite well here, giving an overall goal for us. Also included is a custom soundtrack which is quite well used, although songs occasionally play at inappropriate points. Coastline to Atmosphere does provide some memorable moments, including revenge attempts by Doctor Breen and some impressive environments. The mod does definitely give a feeling of travelling a long distance.

    Combat-wise, the mod relies almost entirely on Combine soldiers, which I think is to its detriment. Some more variety in gameplay would make things more interesting. A lot of scenarios involve opening a route to allow you to proceed with the car. The issue is that you drive the car such a short distance each time that it doesn’t seem worth using it. Lots of the areas you have to drive through are also very cramped, such as narrow corridors with little room to maneuver.

    Throughout the gameplay we are bombarded with a range of on screen messages. They often tell you explicitly what you have to do to proceed, rather than using the environment to give clues. That seems to me like lazy level design, not to mention that it makes no sense from an in-universe perspective. Pressing buttons also causes some odd cutscenes which are usually unneccesary and just disrupt the flow of the levels.

    Graphically, Coastline to Atmosphere is pretty good for its age but some things let it down. Some maps are lacking a 3D skybox, which is very problematic in the seaside maps where the edge of the level is very apparent. The use of “cheap” water textures also looks horrible and reduces visibility of what is below the surface.

    Later on in the mod, combat is made more difficult simply by adding ever larger hordes of soldiers, which occasionally spawn right in front of the player. The modder tries to add some variety by taking us to Breen’s satellite, but disappointingly the environments don’t reflect the idea of being in space at all. The mix of standard concrete wall textures and Combine areas seems far too Earth-bound. As if that was not enough, we then move on to an hallucination section. For some reason these seem to be fairly common in longer mods, but here it is just an excuse for weird environments, lethargic cutscenes and combat with stupid overlays covering the screen.

    I stopped playing shortly after this point, so I cannot comment any further, but from what I gather there is a fair bit more to the mod. Perhaps it improves later on, but by this point I was just tired of playing.

    I know it may seem like I am being too harsh to this mod, especially as many consider it a “classic”, but personally I just didn’t like it. There were some enjoyable and memorable areas, but there were just too many niggles for me to really have fun.

  20. I’m having a consistent crash in map 2da, immediately after opening the gate near the “thumper”. My gameinfo already had 215, so it’s not that.
    Pity, I was enjoying this (more than Strider Mountain…)

    • Web search shows a few people having this problem. Completely unrelated to the 215 thing, neither is it fixed by dialling the graphics settings down to minimum.
      Fortunately it’s right near the end of the map, so skipping to the next map is not too unacceptable:

      map leonhl2-2e.bsp
      give weapon_rpg
      give weapon_frag

      Mini review:
      * Enjoyable gameplay for the first half,
      * Some incongruities on the satellite (smashed up toilet block???)
      * Original but perplexing and drawn-out hallucination sequence
      * Ending sequences too hard, confusing, and hardware-taxing

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