Alien Swarm: Reactive Drop
Alien Swarm: Reactive Drop mods
A mod changes the game itself. It needs something to load it, it may need other mods first, and it only works on the versions its author built it for.
1,902 mods, most downloaded first · newest update 27 Oct 2026
challenge281skin247Sound170Weapons142Marine141campaign116model102prototype rifle89Assault Rifle87heavy rifle82Music80vindicator79Autogun79combat rifle76marksman rifle75bulldog72Weapon70devastator62Deagle59shotgun57HUD53Sounds52Models47Bonus45Grenade Launcher43halo42UI407:7634replacement33ASBI30survival29Texture27Minigun24Config24Blue Archive21Glow19Voice19flag18Space18Dead Space18alien18Railgun17Particles16Drone16marines15animated15Flamethrower14Crosshair14Chainsaw14Meme13Combine13Ammo12rifle12Half Life12particle12Background12Challenges11warframe11blue11Horde11Custom11Grenade10emote10aliens10Adrenaline10faith10Textures10Swarm10Color10Skins9Audio9Arrow9Emotes9VGUI9 Soundtrack9Fun8Glowing8loading7Barrel7menu7Effect7Training7Starcraft7crash7Max Payne6Loading Screen6Guns5Medkit5Anime5gunshot5Red5Gun5health5Escape5Interface5modding5fix5
- GTA 5 weapon pack 2by imelmanReplaces various weapons with ones from Grand Theft Auto 5. An early release due to freeing up some space for once. Model source:183 downloadsupdated 4 y ago
- X crosshair greenby Ax-nowX crosshair green color Other colors Pink: Blue: Red: Yellow:183 downloadsupdated 4 y ago
- Updated Marines (Obsolete)by AstroCatNipThis is an experimental updated version of the marine model which brings some quality of life changes. Feedback to inprove the model would be much aprechiated. Features: -More bouncy dynamic antenas. -Proper Gloves and boots. -The boot no longer clipping through the Exosuits sandals. -Upper row m...182 downloadsupdated 3 y ago
- IAF Medic Signby MithrandIAF Medic Sign Everytime you need a medic, rookie medics are not paying attention. Everytime a skilled medic is around, that one is left to die. This addon will remind people who installed it, they should care more about medics. Instruction are easy: 1. Take a flashlight; 2. Turn it on when you n...182 downloadsupdated 9 y ago
- Gnome-asitesby AstroCatNipReplaces parasites/xenomites with our beloved friend the hl2 ep2/l4d2 gnome. Have fun fighting them and be careful not to get gnomed.182 downloadsupdated 5 y ago
- DRG Dwarf voices (No pitch shift)by AstroCatNipReplaces all marines voices with the voices of the Deep rock galactic Dwarfs but without the change of pitch. -voice replacement including original pitches for the dwarfs -ui sound, footstops, shield inpacts -character and pilot icons !!! Dislamer: does not include dwarf models, "yet" i will add...182 downloadsupdated 4 y ago
- Xenomorph as drone (WIP)by Nakkitsunami kebab.fiThis addon aims to replace the drones and possibly the rest of the aliens in the future as xenomorphs, currently it does cause the ai to not attack so keep that in mind, but at least for now you can get xenomorphs in the game182 downloadsupdated 3 y ago
- Starcraft 2 marinesby imelmanReplaces marines with Starcraft 2 characters. Made as a followup alternative to marine pack. Sarge - Jim Raynor Wildcat - Nova Terra Faith - Adjutant Crash - Ghost Jaeger, Wolfe, Bastille, Vegas - Marine Model source:182 downloadsupdated 2 y ago
- Gachi portraitsby GOLD00016Replacement of the original portraits. Prove to everyone who is the boss of this gym.181 downloadsupdated 3 y ago
- Payday 2 armorby imelmanReplaces marine tactical heavy armor and electric armor with Payday 2 armor. Model source:181 downloadsupdated 3 y ago
- Healing gnome (model)by AstroCatNipReplaces the fire extinglisher with gnome.181 downloadsupdated 4 y ago
- Girl Frontline IDW/Ripper marinesby imelmanReplaces swarm marines with Ripper/IDW from Girl Frontline. Art doesn't belong to me, used only for in-game imagery. Model source:181 downloadsupdated 3 y ago
- Random Mapby 7:76When you clear a mission, the next map is automatically selected at random. This is a test version. To be updated: Avoid duplicate map selection life function180 downloadsupdated 3 y ago
- whiteby 76561198983740396180 downloadsupdated 3 y ago
- Fate Mash/Medusa marinesby imelmanReplaces swarm marines with Medusa/Mashu from Fate series. A stockpile. Art doesn't belong to me, used only for in-game images. Model source:179 downloadsupdated 4 y ago
- Aether Gazer Tsukuyomi marineby imelmanReplaces the 2nd marine group(Jaeger, Wolfe, Bastille, Vegas)with Tsukuyomi from Aether Gazer. More variety type of addons in addition to ones that replace both. Art is not mine, used only for in-game imagery. Model was ported by SDF(ASD)for L4D2, source unavalible.179 downloadsupdated 4 y ago
- Combine soldier korean voiceby hangumiReplace the voice of the combine with a korean dub.179 downloadsupdated 2 y ago
- CS:GO - MP5-SD | Prototype Rifle (Shoot Only)by TrinityChanges the 22A7-Z Prototype Assault Rifle's shoot sound into the sound of the MP5-SD from Counter-Strike: Global Offensive.178 downloadsupdated 3 y ago
- Officer Full Red Skinby DmitriyMakes officer marine armor fully red.176 downloadsupdated 14 mo ago
- Crawlspace (Pre-Alpha)by sniffy194Crawlspace is a work-in-progress map for Alien Swarm built around the third-person camera. Fight through a winding and infested space station with your friends, set off the self-destruction sequence, and get to the cargo bay through endless waves of the bugs that have colonized the ship. This map...176 downloadsupdated 2 y ago
- Aperture Portalgunby AstroCatNipA gift from aperture to syntech maga corp. for work partnership. -custom sounds -3 rng skins -scuffed icon ="Please remember to never look directly into the front end of the device"=176 downloadsupdated 3 y ago
- new rainbow Chainsaws 动态渐变霓虹电锯by 76561198413520989还是霓虹电锯,不过这次是渐变款式的176 downloadsupdated 20 mo ago
- Tower of Fantasy Shiro marineby imelmanReplaces the 1st marine group(Sarge, Wildcat, Faith, Crash)with Shiro from Tower of Fantasy. The 4th addon in seperated marine collection, if people want more of it, then it will become regular instead of experimental. Art is not mine, used only for in-game imagery. Model source:175 downloadsupdated 4 y ago
- Discoloration Parasitesby chaoSParasites retextures.175 downloadsupdated 8 y ago
- ASBI Veteranby ModdedMarionetteCurrent Version: Release v2.4 (Local installation's version can be checked via console at mission start by every player) 中文描述 Veterans of dealing with aliens create veterans of dealing with marines. This challenge aims to offer disruptions to the usual meta in addition to the base ASBI without ch...175 downloadsupdated 7 mo ago
- Blue Archive Plana/Arona marinesby imelmanReplaces marines with Arona/Plana from Blue Archive. After managing to regain access to websites to source images, I can continue what was done for earlier. Art doesn't belong to me, used only for in-game imagery. Model source:175 downloadsupdated 2 y ago
- Sci-fi Sound Packby [VI] Benjamin ZurielThe sounds didn't feel heavy enough for me, and I love my big guns. So I spent the time hunting down sounds and remixing them into this. New sounds for almost all the weapons. A video? Once I can bear the effort to make the video to showcase the audio. Changes: Weapons/Equipment. All new reload s...175 downloadsupdated 2 y ago
- Killing Floor 2 weapon packby imelmanReplaces various weapons with ones from Killing Floor 2. Model source:175 downloadsupdated 4 y ago
- Pumpkin GL and Hand Grenade(南瓜炸弹)by hy236Replace grenade launcher grenade, hand grenade and frezze grenade with pumpkin model. 将榴弹,手雷和冰雷替换成南瓜模型。 Back to the original version(还原到了最开始的版本) Other pumpkin model replacements: Pumpkin Gas Grenade:174 downloadsupdated 8 y ago
- BiliBili 22/33 marinesby imelmanReplaces swarm marines with Bili Girls 33/22. This addon discontinued the previously seperated one as a result. Art is not mine, used only for in-game images. Model source:174 downloadsupdated 4 y ago
- Penguin Sleddingby legomanasThe penguins Amber and Pearl need your help! Their favorite sledding spot has been overrun by Swarm and now they can't get there safely. Your IAF squad will have to escort and protect them from any harm until they reach the sledding spot! The mission must go smoothly. Fight back the Swarm from th...174 downloadsupdated 10 mo ago
- Flag Marines (USA)by hy236Add the America's Flag on the middle back-unit of marine. Based on "Santahat Marine" by hangumi. Flag Marines (China): Flag Marines (Korea): Flag Marines (Russia): Flag Marines (French): Flag Marines (India): Flag Marines (Slovakia): Flag Marines (Estonia): Flag Marines (Australia): Flag Marines...173 downloadsupdated 8 y ago
- GRIMCORE: 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
- Cyber 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
- Tree Swayby jhheightthis addon has been integrated into the base game, its no longer needed to be subscribed to it172 downloadsupdated 6 y ago
- Hololive Rushia/Pekora vtuber marinesby imelmanReplaces swarm marines with Pekora/Rushia virtual youtubers from Hololive. Art doesn't belong to me, used only for in-game images. Model source:172 downloadsupdated 4 y ago
- Flag Marines (LGBT)by hy236Add the LGBT's Flag on the middle back-unit of marine. Based on "Santahat Marine" by hangumi. Flag Marines (China): Flag Marines (USA): Flag Marines (Korea): Flag Marines (Russia): Flag Marines (French): Flag Marines (India): Flag Marines (Slovakia): Flag Marines (Estonia): Flag Marines (Australi...172 downloadsupdated 7 y ago
- Realistic Minigun Sound 3by Minigun SpecialistReplaces minigun sound. Credits to this addon, ported from there:172 downloadsupdated 3 y ago
- Level 1 + Skill Pointsby AstroCatNipSimple as is: -Level 1 Guns and extras + Custom skill points. -Comes with standard asbi version.172 downloadsupdated 23 mo ago
- No More Room in Hell/Fistful of Frags equipment/weapon packby imelmanReplaces various weapons and items with No More Room in Hell/Fistful of Frags equivalents of them. Had to be merged together due to certain design issues that would look too out of place.172 downloadsupdated 4 y ago
- CSO2 weapon pack 2by imelmanReplaces various weapons with ones from Counter Strike Online 2. Model source:172 downloadsupdated 4 y ago
- Beta Buzzer as Buzzer!by Got Pentium?Replaces the current buzzer with BCG's original one. This model is incompatible with any other addon that reskins or replaces the buzzer.171 downloadsupdated 7 y ago
- Deima Grass Skinby Minigun SpecialistSpring comes to Deima Surface Bridge. Some snow have melted and turns out there is grass underneath it. Who could have thought?! There is still ice and snow piles here and there, but as you can see this planet is very habitable. We must cleanse it from infestation to allow building new colonies....171 downloadsupdated 7 y ago
- Overwatch korea ver zarya-wildcatby ターニャOverwatch korea ver zarya-wildcat !!!171 downloadsupdated 10 y ago
- Trainingby FrodoInfinite adrenaline to practise harder difficulties - 35% speed(normal adrena) - 50% speed - 75% speed171 downloadsupdated 6 y ago
- Drones Have Eyes ??? (The Big Brother)by AstroCatNipThis mod gives Uberdrones eyes and fangs and they are now a walking nightmare. ///You bullyed to many drones so now come the big brothers!/// -Inspired by the beta drone design -Uberdrone reskin (Uberdrone only) -Their eyes glow in the dark -Supports custom skins "I have once seen marine have his...171 downloadsupdated 4 y ago
- Old Devastator Firing Soundby ModdedMarionetteThis addon reverts the change to the Devastator firing sound that came with the 6th anniversary update on April 20th. Special thanks to Ben Lubar for providing me the original sound files.170 downloadsupdated 3 y ago
- Funplayers Modby JoeyMore Hornet Rockets More ammo bags More Tesla Traps More ammo for Amp healing gun More ammo for MTD Rockets More ammo + Damage Flamethrower More ammo Assault Rifle Challenge Added! +More Aliens +Aliens Drop Loot sometimes +Ammo Boxes now fill Secondary Ammunition +Revive Enabled +No FriendlyFire...170 downloadsupdated 7 y ago
1.9k 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.

