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Lambda Fortress

Wishlist Follow Ignore Install Unwatch Watch
App ID 3564500
App Type Game
Developer
Publisher CoaXioN
Supported Systems Windows Linux
Technologies Source Engine
Last Changenumber 30092423
Last Record Update 16 July 2025 – 15:32:03 UTC ()
Release Date Coming soon
Parent App Team Fortress 2 (440)

Lambda Fortress is the iconic mod that brings the Team Fortress 2 mercenaries into Half-Life 2 and other Source campaigns for singleplayer & co-op play. Now on Steam!

Additional Information

This game is excluded from Steam Family Sharing because: Parent app is excluded

Developer CoaXioN
gamedir lf
controller_support partial
serverbrowsername Lambda Fortress
MustOwnAppToPurchase Half-Life 2 (220)
ReleaseState prerelease
Publisher CoaXioN
IsFreeApp Yes
Exclude from family sharing (exfgls) 9 (Parent app is excluded)
Store Release Date Coming soon
osarch 64
community_hub_visible Yes
Social Media https://bsky.app/profile/coaxion.games
https://discord.gg/dSfXTNEGP7
https://www.youtube.com/@coaxiongames/
Primary Genre Free to Play (37)
Store Genres Action (1), Free to Play (37)
Store Asset Modification Time 12 June 2025 – 17:23:17 UTC () (1749748997)
library_assets
library_capsuleen
library_heroen
library_hero_bluren
library_logoen
library_headeren
logo_position ↴
pinned_positionUpperCenter
width_pct50
height_pct50
osextended empty string
Is free on the store? Yes
Detected Technologies (?) Source Engine, Autodesk_FBX SDK, SDL SDK
Content Descriptors Frequent Violence or Gore (2), General Mature Content (5)
controllertagwizard Yes
Anti-Cheat Software VAC (Valve Anti-Cheat)
First seen on SteamDB 28 February 2025 – 04:25:27 UTC (), in changelist #27710288
Content Descriptors (Including DLC) Frequent Violence or Gore (2), General Mature Content (5)

Supported Languages

6 Languages Interface Full Audio Subtitles
English Yes Yes Yes
Russian Yes
Simplified Chinese Yes
Bosnian Yes
Croatian Yes
Serbian Yes

Tags

💥 Action 🤝 Co-op 🔫 Shooter 🔫 FPS 😃 Funny 🧊 3D 🐰 Cartoony 🌱 Realistic 🙌 First-Person 🌫 Atmospheric 🔫 Hero Shooter 🤡 Comedy 👽 Aliens 🏋️ Class-Based 🔋 Physics 🫠 Surreal 🤝 Co-op Campaign 🧟 Zombies 🦹 Character Customization ⚔️ Combat

Categories

Single-player Online Co-op LAN Co-op Steam Achievements Captions available Steam Workshop Steam Cloud Stats Includes level editor Includes Source SDK HDR Supported Steam Timeline Profile Features Limited Multi-player Co-op

Hardware Categories

Partial Controller Support

Assets

Load all asset images
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clienttga 29c6e44c3d930b3350e702ffab10f6e0d6bb53f3
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LinuxClientIcon 9b3b5526e53d1c088f21538b1de0ce974d729b56
small_capsule
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header_image
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library_assets_full
library_capsule ↴
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image2x/english6c4539876c260b470a6b1a1f4e0095befa8d2646/library_600x900_2x.jpg
library_hero ↴
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image/english1bc9ed1bdcc4d451ff7da31e7de8dcef02806573/library_hero.jpg
library_hero_blur ↴
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library_logo ↴
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logo_position/pinned_positionUpperCenter
logo_position/width_pct50
logo_position/height_pct50
library_header ↴
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image2x/english8499e4ca93ab9a21b66694d01313ddb964b40cce/library_header_2x.jpg
Assets
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small_capsuled72fbfb556dba6f2dc074fdee4ac7de48641afb4/capsule_231x87.jpg
header53e73ca5cee32a595170408c90c84d4fcb11d869/header.jpg
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hero_capsulef99b0edd4286b17c63033a83afdce2d902d3f6b0/hero_capsule.jpg
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community_icon7ea66bc5ad0a42d3c4c7a062b5b79a9e7c159b53.jpg
page_background_pathapp/3564500
raw_page_backgroundc36f5dae07a4bc5082fb5728838434e7aae492a0/page_bg_raw.jpg
timestamp12 June 2025 – 17:24:07 UTC
Trailers
257144926 ↴
trailer_nameLambda Fortress Store Page Trailer
trailer_category3
trailer_480p/video/webm257144926/movie480_vp9.webm
trailer_480p/video/mp4257144926/movie480.mp4
trailer_max/video/webm257144926/movie_max_vp9.webm
trailer_max/video/mp4257144926/movie_max.mp4
microtrailer/video/webm3564500/211841421/e2b4819508756206ad1b0bd1d20868f7bc84980c/1750839890/microtrailer.webm
microtrailer/video/mp43564500/211841421/e2b4819508756206ad1b0bd1d20868f7bc84980c/1750839890/microtrailer.mp4
screenshot_medium257144926/d4e0c135d6ce2d23593f6429728ecc6c0247b3f7/movie_600x337.jpg
screenshot_full257144926/d4e0c135d6ce2d23593f6429728ecc6c0247b3f7/movie_full.jpg
trailer_base_id898994
all_agestrue
is_highlighttrue
timestamp1748372564

Depots

ID Configuration Size DL.
228989 Windows Shared InstallDepot from 228980VC 2022 Redist No size
228990 Windows Shared InstallDepot from 228980DirectX Jun 2010 Redist No size
3564501 2.67 GiB 1.37 GiB
3564502 Windows 64-bit 162.61 MiB 53.61 MiB
3564503 Linux 64-bit 91.36 MiB 19.90 MiB

Total size on disk is 2.92 GiB and total download size is 1.44 GiB.

Total size on disk is 2.83 GiB and total download size is 1.42 GiB, when filtered to Windows, English, no DLC depots.

Branches

Name Description Build ID Time Updated
public 17804908 21 March 2025 – 06:58:28 UTC
beta indev testing 19247093 16 July 2025 – 15:32:01 UTC
replay-legacy Legacy LF build for viewing replays recorded for the trailer 18415491 16 July 2025 – 08:49:54 UTC

Other

Name Value
workshopdepot Lambda Fortress (3564500)
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