Mods / Custom

• CCustom HUDby Snack-tacularThis Custom HUD shows all Players on the HUD. Tested on all 16:9 Resolutions. While you're at it, also get this: Lobby 8 players list full view by byblo 这个自定义HUD显示了HUD上的所有玩家。在所有16:9分辨率测试。当你在它，也让这8位球员的名单：大厅全景的毕布勒 （翻译）56.5k downloadsupdated 4 y ago
• AAlien OST Musicby CraigReplaces twelve tracks with orchestrated pieces from the film Alien (1979). Message me for music requests. (You must have the names of the tracks you want replaced. Let me know of any issues aswell.6.1k downloadsupdated 10 y ago
• MMission Briefing / Deployment Themeby WinterMetal Gear Solid V: The Phantom Pain OST A new epic music for selection of character and weapons. All credits for Kojima and MGS Team. Thanks for the all support!3.0k downloadsupdated 10 y ago
• SSW Robot Marinesby SligWolf►►► Please read the description for all informations about the addon! ►►► Click for the terms of use. This addon will replace the normal marines and their icons. Other Players or Servers don't need the addon, you can use it anytime. The addon works for Alien Swarm and Alien Swarm: Reactive Drop....2.2k downloadsupdated 9 y ago
• GGrimCore: UI: SandStorm 2026by GrimowyCustom UI: SandStorm 2026 based on the default UI code updated in parallel with the development of the official UI extends functionality reduces unnecessary elements 基于默认的UI代码 与官方 UI 的开发同步更新 延伸功能 减少不必要的元素 Read it! 阅读它！ After subscribing or re-enabling the add-on, restart the game twice for everyt...620 downloadsupdated 3 mo ago
• GGrimCore: UI: Aliens SandStorm 2026by GrimowyCustom UI: Aliens SandStorm 2026 contains video background link to: version without video background expands functionality reduces unnecessary elements Read it! 阅读它！ After subscribing or re-enabling the add-on, restart the game twice for everything to work properly. Each update of the add-on may...211 downloadsupdated 3 mo ago
• GGRIMCORE: VIDEO: LOBBYby GrimowySciFi style video package for lobby/briefing Scenes with animation of devices and rain.. Only the standard briefing/loading backgrounds are changed when a given map does not have its own. If you like it, don't forget to Rate Up this add-on. If you want to easily find this add-on in the future, ad...173 downloadsupdated 2 y ago
• SSCP: Containment Breach ambienceby 76561199224553445Turn Alien Swarm ambience into scp: containment breach ambience.133 downloadsupdated 8 mo ago
• MMMod x Jakes Beefier Weapon soundsby 76561199224553445Uses sounds from hl2 mmod x Jakes beefier sounds to make the alien swarm weapon stronger.88 downloadsupdated 2 mo ago
• BBetter gas particlesby Ax-nowchange the gas particles for better visibility and more information on the duration.59 downloadsupdated 14 mo ago
• AAx Custom HUDby Ax-nowedit based on AutoGavy's mod: makes weapons selected less on the side of the screen for better visibility51 downloadsupdated 14 mo ago

11 custom mods, most downloaded first. Each one has its own page here with what it needs to run and where its author publishes it; the files themselves stay with the author and are never re-hosted on this site.