Mods / alien

• SStar Wars: Republic Commando Player Modelsby Larval ExtractThis mod replaces the default player models with Delta squad from Star Wars: Republic Commando, allowing you to play as Boss, Fixer, Sev and Scorch. No sounds are included with this mod. Credit goes to LucasArts for creating the original Star Wars: Republic Commando assets; all I did was rig/port...25.3k downloadsupdated 9 y ago
• AAlien Hordeby GilmoreI felt that Alien Swarm did not live up to it's name, so I created this fun challenge. This challenge adds constant hordes of aliens that will spawn in to attack you, as well as some other additions that will help you manage the constant onslaught of aliens. Features include, - Constant hordes of...7.4k downloadsupdated 10 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
• BBetter Subtitlesby TiTanium mk2Change font for subtitles and closed caption to fit game style4.4k downloadsupdated 10 y ago
• IInfinite - Challengeby ETimeXAll spawners will be infinitely spawn aliens. All weapons and items will have infinitely ammo. And add some medical & hack support. version 1.3: Add hack suppport. Increase item recovery time. version 1.2: Infinite for everything? version 1.1: Reduce boomer, shieldbug, antlionguard base health.3.1k downloadsupdated 9 y ago
• AASW Styled Antlion Guardby dreamer_dreamerSimple reskin which purpose is to make Antlion Guards to fit style of the game. Credits: Valve; Reactive Drop Team.2.0k downloadsupdated 5 y ago
• 44K Alien Bloodby PinorskaI didn't make these textures. I only ported them to Alien Swarm. Be sure to restart your game after downloading this mod as otherwise the texture might be scaled incorrectly. I recommend using this mod with this1.9k downloadsupdated 4 y ago
• UUSCM Weapons - ALIENSby AkelaReplaces the Assault Rifle, Autogun, and Flamer with the M41A Pulse Rifle, M240 Incinerator Unit, and M59 Smartgun from ALIENS, respectively. This is a modified version of "Weapon Skin Replacement", which was created by Floggur and uploaded by YOJIMBO. I've simply tweaked the sounds for the Pulse...1.8k downloadsupdated 6 y ago
• BBlood! (Boomer Bloody Skin)by BigrandThis mod I did so only to test what it is to do a mod, Hire updating it, for the moment is the Boomer, and obviously there is a lot more aliens to place, I hope you like it :D and have fun! (inactive project)319 downloadsupdated 9 y ago
• BBeta Mortarbug as Mortarbug!by Got Pentium?Replaces the current mortarbug with BCG's original one. All the animations, textures, and ragdolls work from my time testing it. This mod is incompatible with any other addon that replaces or reskins the mortarbug. Ignore this: black cat, infested, as:i, You didn't ignore it :(249 downloadsupdated 7 y ago
• DDead Space 3 Feeder Sounds for Droneby geewormThose annoying drones not scary enough? Well now you have it, they can give you PTSD of the time you first encountered a Feeder. This replaces some sounds of the Drone with the feeder instead. INCLUDES: -Roar 1,2 -Alert 1,2,3 COMING: -Pretty much the rest of the sounds. Pain, attack, death etc. P...248 downloadsupdated 8 y ago
• [[W.I.P} Alien Swarm Beta Dronesby geewormRemember that old beta drone replacement that got taken down? Now here's another one, and its even better. Features: -Full animations, including climb, leap and unburrow -Cool eye glow on drones -Some custom animations too! Including an improved idle -Semi-beta styled Ranger -Beta Styled Mortarbu...195 downloadsupdated 8 y ago
• CCyber Droneby AstroCatNip"Telic has been experimenting on swarm drones to fight against the swarm infestion as you can probably imagine this backfired and now we have to clean up after them." This mod adds: -New Cryber uber drone model -Custom sounds -Glowing red eyes Thanks to Risbo for providing the model. /// v1.2 upd...173 downloadsupdated 2 y ago
• 22026 Spiked Antlion Guard (With Drone claws)by Risb0This model using claws to match other aliens. This addon is compatible with your custom aliens and claws skin/textures. If you like the original style of the green aliens i recommended it with: Enjoy.127 downloadsupdated 4 mo ago
• BBetter Boomer ballsby Ax-nowA midified version of another workshop addon mod Real range of boomer bullet explosions A light color that fits better with the atmosphere of the base game This addon also slightly changes the colors of the mortarbug's projectiles for better visibility while keeping the base particles.118 downloadsupdated 14 mo ago
• 22026 Ranger Model (Drone claws replace original nails)by Risb0This ranger model using claws to match other aliens. This addon is compatible with your custom aliens and claws skin/textures. Enjoy.72 downloadsupdated 4 mo ago
• AAS:I Alien Eggsby AstroCatNip//Replaces your retail alien eggs with as2k4´s and alien swarm infested´s very gooey and transparent eggs. //all rights go to blackcat studios. //enjoy.66 downloadsupdated 3 y ago
• 22026 Mortar Model (Drone claws replace nails and teeth)by Risb0This mortar model using claws to match other aliens. This addon is compatible with your custom aliens and claws skin/textures. Enjoy.60 downloadsupdated 4 mo ago

18 alien 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.