This a list of Releases and Patches for the Lost Alpha.

Release-download-thumbnail patch


The development of the Lost Alpha started in the summer of 2008. The project first started out as a modification to add back the cut levels which all Stalker fans knew of. After a while, it became more than just a modification, it became a new standalone game. In 2014 it was planned to release the Lost Alpha as an official add on for S.T.A.L.K.E.R.: Shadow of Chernobyl. In March and April 2014 it was reported that the game was leaked on some file-sharing websites and that it got already downloaded. The plan with the add on failed.


On the 26th April the game was released titled as being "early access" and that it needs still some tuning.


The first version of the game was the v1.3000 which marked the start of Lost Alpha being available for everybody.


Here is the list of patches available for the game:


This is the first patch released by Dezowave and here is the complete changelog and description from dezowave's official website:

The patch is savegame compatible, so You do not have to start new game for this patch, but for maximum experience (and because of Murphy’s law) it’s highly recommended. If you installed 3rd party / user made fixes and mods for Lost Alpha retail, it’s highly recommended to reinstall the game to have a clean install before you apply the official patch. This is required to avoid conflicts with the 3rd party content. We can not give support for such cases.

Also if you are trying to load gamesave which you made while you used mods or fixes for the retail Lost Alpha, they won’t work with the newly patched game. You will need to start new game in such case, because all previous modded content was saved to your savegame, which is now unavailable in game since new patch has new content.

  • S.T.A.L.K.E.R.: LOST ALPHA Patch v1.30013 (2nd of May 2014.) changelog:
  • - game binaries are working with administrator privileges now, avoiding problems with User Access Control (UAC) subsystem
  • - game will work on windows xp, although dx10 cannot be used
  • - quicksave / quickload buttons now can be remapped
  • - fixed serious bug with wrong ui_movies.xml which prevented to play half of the game
  • - fixed storyline battery task in sarcofag
  • - fixed flying tree and geometry on Yantar level
  • - fixged geometry on Garbage level
  • - fixed the crash on r1 (static lightning) render when player entered ‘Great Metal Factory’ level
  • - fixed rat monster crash and effectors bug
  • - fixed random crash related to pda contacts section
  • - temporaly disabled legs/shadow in options, if you have it enabled, please type this to console: g_actor_body 0
  • - with removing visible leg feature, the missing footsteps and self shadow works again by default
  • - “la options” debug menu is disabled on widescreen
  • - crows are again killable
  • - ak74, ak74u, L85, G36 sounds synchronization fixed
  • - proper fix for safe crash
  • - missing “chmieltist” beer drinking sound fixed
  • - missing p90 model added
  • - brightness, gamma and contrast sliders fixed
  • - no available phrase to say, dialog[yantar_sakharov_start_talk] fixed
  • - no available phrase to say, dialog[agr_ratcatcher_start] fixed
  • - no available phrase to say, dialog[dol_specnaz_leader_dialog] fixed- several (hopefully all) missing descriptions added back
  • - crash when player ESC from solitare and hex viewer fixed
  • - restored working class for hex viewer, text viewer, image viewer, console
  • - fix for artefact merger
  • - crash in repair window fixed
  • - wrong passwords for doors in pda fixed
  • - loading last save overlap window fixed
  • - added marker for ‘strelok’s flash’ and ‘yantar wires’ because many users reported it’s too hard to find them
  • - fixed camera position to climb out of UAZ jeep
  • - fixed OnMouseAction crash (Tetris in LA PC)
  • - Veles gives correct download module, so no need to buy it from Barman
  • - updated mi24 model, should fix “callback kils bone matrix bone: front_gun_tower”
  • - improved tasks and task completion on agroprom
  • - fixed luminocity and distance for stalkers to default value, ai works better
  • - removed the strange reverb when eax is enabled, and added more stable sound dlls
  • - temporary fix for missing suit upgrade
  • - fixed incorrect mag size for upgraded pb1
  • - added vehicle prices to dialogue
  • - corrected outfits icons and soldier outfit
  • - new helicopter sound with tuned volumes
  • - helicopter in cordon patrols less often
  • - helicopter windows in agroprom fixed (were transparent on r2-3 renders)
  • - added pda articles for downloads
  • - missing vehicle icons were added
  • - several vehicle properties were changed
  • - topoliny puh anomaly not glitching anymore
  • - car fuel should work now
  • - various small tweaks and fixes


This is the second patch released by Dezowave and here is the complete changelog and description from dezowave's official website: Due to the changes in storyline and engine, it’s required to start a new game after you installed this update. Your previous saves will not work. This patch is cumulative, so you will not need to install the previous (1.30013) patch at all.

  • Changes Log:
  • Fixes:
    • - fixed vibrating (constant open and close) doors on Great Metal Factory level
    • - fixed inaccessible “ashes to ashes” stash on Darkdolina level- fixed crash for missing suit upgrade
    • -fixed Escape bridge soldiers dying because too far from shelter
    • - fixed flying trees and props on Darkscape level- fixed Pripyat geometry (missing surface)
    • - fixed Arena mobs missing bug- fixed no available phrase to say, dialog[dm_artefact_merger_wnd]
    • - fixed no available phrase to say, dialog[forg_stalker_trader_start]
    • - fixed map marker for bandit suit on Darkdolina
    • - fixed crash related to missing crossbow decor model’
    • - fixed level changer position from the Power Plant to Sarcofag
    • - fixed Radar crash near outpost
    • - fixed ui_repair_wnd.script:471: attempt to index field ‘selected_item’
    • - fixed quickload after death with hotkey
    • - fixed Greben jobs and dialogs on Yantar
    • - fixed usage of motion blur effect on R2 (dynamic lightning)
    • - fixed Lukash task dialog
    • - fixed Petrenko’s task and dialog on Great Metal Factory level
    • - fixed Sidorovich’s message to kill zombies even if all are dead
    • - fixed incorrect RPM for upgraded sig550
    • - fixed can’t open section ‘bandages’
    • - fixed incorrect icon for upgraded VAL weapon
    • - fixed return entry to Pripyat from Outskirts
    • - fixed [error]Description : callback kils bone matrix bone: bip01_spine2
    • - fixed crash when killing stalker trader on Construction Site
    • - fixed some other codes for doors
    • - fixed broken logic for doors and camera on Lost Factory
    • - fixed some floating boxes and barrels in Agroprom
    • - fixed ai-map in Deadcity (monsters climbed the bridge from the river)
    • - fixed ai-map for the duty sniper on Garbage outpost
    • - fixed ai-map and geometry on Yantar level
    • - fixed green glass in windows, jars etc. on r1 (static lightning) render
    • - fixed shader for lamps on dx10 (bulbs in lamps visible again)
    • - fixed incorrect calculation of money
    • - fixed Pripyat secret trader, now he will appear
    • - fixed crash in DetailManager, often shown on Generators level
    • - fixed some broken freeplay tasks
    • - fixed pda buttons (and the crash when using it)
    • - fixed missing known info strings
    • - fixed unresponsive bloodsucker on Darkvalley when climbing through hole in roof
    • - fixed Deedee antidote exploit
    • - fixed kill statistics
    • - fixed No available phrase to say, dialog[forg_dolg_raid_dialog_finished]
    • - fixed rendering crashes on all levels, but mainly related to the last few ones
    • - fixed transparent window frame on Generators level
    • - fixed missing Sin house (esc_basement_motor_cache) stash in Escape level
    • - fixed upgraded icon for PSZ-9Md outfit
    • - fixed crash when using repair kits
    • - fixed Sakharov dialogs
    • - fixed faulty stashes on Army Warehouses level
    • - fixed auto fire upgrades
    • - fixed Deadcity money issue
    • - fixed kampers ignoring danger
    • - fixed contact’s incorrect avatar on Army Warehouses level
    • - fixed position of anomaly which was almost inside the Bar on Great Metal Factory
    • - fixed crash when talking to Duty leader on the Power Plant level
    • - fixed trees which had no collision
    • - fixed No available phrase to say, dialog[escape_wolf_greatings]
    • - fixed broken task when Hunter moves to Outskirts
    • - fixed duplicating ammo in safe exploit- fixed weather
    • - fixed transparent metal surface on Garbage level
    • - fixed crash which happens if you try to talk to an npc via pda chat in the same time the npc dies
    • - fixed upgraded icon for VAL weapon
    • - fixed mutant wave on the Power Plant level (sometimes task did not finish)
    • - fixed reaction of monolith soldiers at the Power Plant level when player drives BTR vehicle
    • - fixed various small glitches
  • Addons:
    • - finetuned all traders and their stock
    • - added missing map hint for Garbage sniper
    • - removed anomaly from the middle of the road on Great Metal Factory which made the access to Military level with car very hard
    • - Strelok’s book can be dropped now, but it will be available in the articles menu on your pda as well
    • - now can buy cars from Outskirts barman too
    • - monster and character relations were tweaked
    • - added timer on hud for the gasmask on Rostok Factory level
    • - slightly increased probability of rain and thunder
    • - knife hit powers finetuned
    • - alcohol postprocess effects tweaked
    • - dx10 render optimized (more will come in later patches)
    • - added feature: when checking stash with purple icon and not taking all of theitems, the icon will change to green and will only be removed if you take all
    • - pda chat finetuned, if a participant goes offline, you will see message “connection lost”
    • - added X18 documents dialog to the “barman” Petrenko so that dialog can complete if doing task later
    • - made Sin neutral to the actor (to avoid misunderstanding)
    • - made Sin hostile towards actor_dolg (if player joins duty) and dolg (duty faction)
    • - added more fuel to traders and stashes
    • - finetuned ai reactions
    • - finetuned certain monster reactions
    • - removed extra sleeping bags from the game, but the one you have is now dropable, tradeable, and you can buy one at traders
    • - added ladder to the hole on the ground in Yantar to make climbing in and out more convenient
    • - revisioned and united all weapon hud positions
    • - the secret trader now sells only unique items
    • - added more alife to Darkscape, Forest, Outskirts and Country levels
    • - particles engine tweaked, finetuned and more stable
    • - implemented cloud shadows on r3 (dx10) render too
    • - added pda message about the 3rd bloodsucker to kill on Rostok Factory level
    • - enemies won’t ignore you if you are sitting in a car
    • - various smaller tweaks and fixes
    • - removed test grenades and fixed bug so now NPCs will run from grenades they throw if they land close to them


This is the third and latest patch released by Dezowave and here is the complete changelog and description from dezowave's official website: Due to the changes in storyline and engine, it’s required to start a new game after you installed this update. Your previous saves made with 1.3002 will not work. This patch is cumulative, so you will not need to install the previous (1.3001 or 1.3002) patch at all.

  • Changes log:
  • Fixes:
    • - fixed “can not open video stream” crash on Swamp
    • - fixed missing sprint anim for Fort pistol
    • - fixed weather getting stuck on “af_preblowout”
    • - fixed Sin being hostile for no reason on Darkscape
    • - fixed random NPCS at kamp in garbage
    • - fixed Lukash anomaly machine task dialog
    • - fixed crash to desktop after final arena battle- fixed errors with unupgradable stalker exo outfit
    • - fixed third gift dialog with Ivancov
    • - fixed case where sometimes Mole would not talk after military battle
    • - fixed Can’t find include file:[text\eng\string_table_tasks_swamp.xml]
    • - fixed [error]Description : No available phrase to say, dialog[out_hunter_start]
    • - fixed stalker trader leaving his post on Construction level
    • - fixed Sarcofagus battery not disappearing after use
    • - fixed case where Dolina prisoner won’t talk to you if you open the cell before he is captive
    • - fixed crash with “missing section”
    • - fixed unresponsive military at cordon bridge
    • - fixed military blockposts getting hostile for no reason
    • - fixed early message to meet Mole from Seriy task
  • Addons:
    • - finetuned weapon damages again
    • - finetuned step sounds for earth surface (they were too silent)
    • - finetuned monster damages again
    • - finetuned ai reactions for silenced weapons and certain materials
    • - raised the headlamp’s light angle
    • - disabled ammo repacker until we can make it better
    • - upgraded bandit outfits will now also work for the bandit infiltration task- increased secret trader stay time
    • - increased chance of secret trader having unique items
    • - removed the money robbing on Deadcity to create a smooth cutscene in prison
    • - added missing trade ltx for Petrenko. Note that it will only work after a certain stage in the game!
    • - added working trunk to white lada on Darkdolina
    • - added free roaming NPCs in Freeplay mode (after good ending)
    • - removed .avi files from the game to avoid conflict with codecs on certain computers
    • - reduced some more quest items’ weight to zero
    • - added missing articles for Burer and Chimera
    • - removed unnescessary crashes with errors such as ! item [***_***_***] not found!!

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