Mods / campaign

• DDead Cityby Daniel101Campaign with 4 levels/missions Misson Briefing: Syntek have a serious problem they have an important director stuck in the city. He is held up in a Syntek building, completely over run by the swarm. You have to walk him out of there.112.1k downloadsupdated 8 y ago
• CCity 17by Mrs. Puss108.5k downloadsupdated 5 y ago
• LL4D2: Dark Carnivalby Rock N RollMission: Highway Previous events - We escaped from the mall in a Jimmy Gibbs car. Now we have to go through the highway to motel Whispering Oaks. Go through the swamp and get to the amusement park. In the motel you have to fill the generator with five canisters of fuel, be careful, random shootin...62.8k downloadsupdated 7 y ago
• BBlack Mesaby Rock N RollA series of maps by the cult game Black Mesa, the campaign has four missions so far. maps that I have already done, made three-dimensional, taking into account the rotation of the camera, so go to the settings and adjust the buttons for rotation. MY WORKSHOP36.7k downloadsupdated 8 y ago
• AAdanaxis Campaignby OrangeAdanaxis campaign. 6 quality maps + 1 bonus map. Latest news: 20.09.2019 Dark path has been updated with new nice crystals created by ZETA. Big thx to him:) 04.09.2019 Dark path rework is ready. Perhaps soon there will be additional stuff but for now we introduce yet another nice update. So map i...36.5k downloadsupdated 7 y ago
• BBiogen Corporation campaignby DmitriyBiogen Corporation is a 3 mission campaign by Uradzimiru. RD team have the permission to include this campaign into RD but this campaign needs some polishing and for now is available through workshop. Mission 2 is a puzzle mission where you need to find guns and a way to the Biogen labs. Mission...20.3k downloadsupdated 8 y ago
• RR&D Firing Rangeby PaigeThe R&D Firing Range is an extensive weapon testing suite where you can get a feel for all the weapons in a controlled environment. Features a fully equipped armoury, and five firing ranges offering many enemy types to fire at. Have fun! Due to recent updates exposing some new things to map maker...19.0k downloadsupdated 6 y ago
• TThe Beginningby Kenny_WWEIn this campaign (4 maps) you have to fight the way from the entrance of an big building to the very top of it. Why? Because there will be a ship ... who should fly your team to safety! Note: Screenshots are outdated a bit, sry ;)17.2k downloadsupdated 10 y ago
• WWar of the Worldsby Rock N RollMissions and companies that are included in the assembly: Entrance Zoidberg Reactor Edge Icy Dawn Total missions: 7 Thanks to all who allowed to use their material Authors: Map Design - Entrance - Author: Crusader_bin Map Design - Zoidberg Reactor - Author: lundiplutzmus Map Design - Edge - Autho...16.8k downloadsupdated 7 y ago
• RReductionby [VI] Benjamin ZurielI uploaded this 6000 hour worked campaign, in the memory of XFunc_CaRteR, He didn't get to finish it. RIP mate. The second map is broken skip it. NOTE I DID NOT MAKE THIS. XFunc_CaRteR made this campaign please credit this in the memory of him. Thanks to Zolerox the mate fixed the images for the...15.8k downloadsupdated 10 y ago
• SSilent Corridorsby DmitriyA campaign that consists of tilegen generated maps with various different gameplay tweaks. 2nd map was just added, it was made in 3-4 hours, so don't judge harshly :)15.8k downloadsupdated 5 y ago
• IIn two galaxiesby Rock N RollMissions and companies that are included in the assembly: Infected Lab X Homicidal Cloning Computer Center: Snow Crash Hessian Border Station Fireteam Operation x5 Hive Total missions: 9 Authors: Map Design - Infected Lab X - Author: Herezy Map Design - Tau Ceti IV - Author: GjRud Map Design - Co...14.6k downloadsupdated 8 y ago
• LLana's Escape (Vanilla)by HephalistofeneLana's Escape is a five mission campaign where you investigate an IAF weapon facility. This is the vanilla version.14.3k downloadsupdated 9 y ago
• PParanoiaby Alan WakeParanoia : Complete Edition. 3 maps through hell ! Enjoy ;)12.5k downloadsupdated 10 y ago
• OObscure Campaignby RevenantYou might want a flashlight... Two missions campaign created by Saran Hasnor.12.4k downloadsupdated 9 y ago
• AAncient Ruins Campaignby 5564653254If you are up for the gameplay this campaign is for you. Some funny and unique gameplay techniques present in this campaign. Visuals though could be improved. Campaign by Cryora.12.3k downloadsupdated 10 y ago
• CCall to Cathaluby 5564653254IAF have been called in to investigate the Cathalu facility. This is a one mission campaign by XentriX74.12.1k downloadsupdated 10 y ago
• LLarnokby MjäYYY MIAUUU MURR NAUSKsPlay through three intense missions about the planet Larnok in the galaxy of Vidarnaq11.5k downloadsupdated 10 y ago
• MMidnight Harvestby NeboriteA two map campaign.10.3k downloadsupdated 10 y ago
• RRD Dead Cityby DmitriyA slightly modified version of Dead City mission 1. Does not conflict with the original version and can be installed side by side. This is a one-map-campaign.10.1k downloadsupdated 5 y ago
• NNestby DmitriyAn experimental hardcore map where you enter a cave to extract a sample of biomass. The cave if filled with aliens and mutated red drones. Red drones cannot be ignited, frozen or electro-stunned, they also have increased health.10.0k downloadsupdated 6 mo ago
• NNAAMby Eerie-EgNAAM - Not Another Adrenaline Maps. Complex unlinear openworld maps with "vertical" gameplay also with huge amount of random (supply crates, mobs, spawns, objectives, effects, ammo and even some paths etc). Added new enemy - Toxic Maggot. Inspired by Lana's 3 Maintenance, SynTek Residential and P...10.0k downloadsupdated 7 y ago
• AAMBER Project Campaignby jhheightOver a year of wait and 400 hours of mapping. AMBER Project is a campaign where you are sent to a huge building to investigate an accident that happened while the company named "AMBER" was studying new organisms that were found in Sahara Desert caves. 4 maps: Information Department Powerhood Rese...8.8k downloadsupdated 4 y ago
• PPuzzle Bundle Campaignby 5564653254Puzzle Bundle is a campaign containing puzzle maps Brainwater Shieldbug Wrangling and Brainwater Warehouse by Nightgunner5, Industrial Jungle by Lycosa, Cube by Toby Kellaway, Red Thing Escape by -210. Check it out if you are up for puzzles! You will need to activate your brain and sometimes be v...8.7k downloadsupdated 10 y ago
• AAccident 32 Campaignby jhheightAfter a year of wait and over 600 hours of mapping Accident 32 is a campaign where your crew is set out to investigate the accident of year 2032 and defuse the "chemical bomb" which is the Muon Gem before its too late. 3 maps: Confined Facility J5 Connector Lab Ruins Features unique content: - ne...8.6k downloadsupdated 4 y ago
• TTraining Range (Updated 11/07/2022)by dilydaly123A shooting range, also a place to get your guns back from the original Alien Swarm (AKA POWER LEVEL). Kick back and relax with some friends. Lemme know if you think anything should be added. If you really wanna level fast, just keep completing the level by running into the map credits room over a...8.5k downloadsupdated 4 y ago
• CCataclysmby jhheightCataclysm consists of 2 maps: - Space Port Catastrophe - Train Station Investigation8.4k downloadsupdated 8 y ago
• SSurvival Bundleby 5564653254This is a collection of 2 survival maps gathered in one addon. List of maps - Killzone by "kh" - Frosty Remake by "Lycosa"8.4k downloadsupdated 7 y ago
• JJacob's Rest 7 in 2by jhheightNeed more large maps. Campaign consists of 2 maps: 1. Jacobs Rest from Landing Bay to Rydberg Reactor 2. Jacobs Rest from Syntek Residential to Timor Station There are some supplies like ammo, sometimes freeze nades, electrified armor between maps. On first map you only need tech for Landing Bay,...8.2k downloadsupdated 6 y ago
• GGround Zeroby ターニャ8.2k downloadsupdated 9 y ago
• EEdgeby BladekillA delightful five map campaign. With a very delightful spaceship map at the end. Play till you die boys! Stay Frosty. Not made by me its by Jester_prince8.2k downloadsupdated 10 y ago
• OOperation: Chaos Theoryby RevenantOne mission campaign by Darkpigeon. A bio-weapon is on the loose, and you're the blokes that can stop it8.0k downloadsupdated 9 y ago
• OOutpost 5 Campaignby 5564653254Outpost 5 is a one mission asw_tilegen based map by larrybrains. This map some funny gameplay elements never seen in other maps.7.8k downloadsupdated 10 y ago
• CCity 17by Fuzzy "aNIMaL"Stable City 17 campaign 5 Maps: Train Station City Center Tunnel Fountain Citadel Obviously not mine, as the super friendly neighborhood commentators will state, but this is my fav campaign and the easiest way to share it. Had this map for well over 7 years. The recent one I tried was not stable...7.7k downloadsupdated 9 y ago
• DDead Temple Campaignby RevenantFive maps campaign created by Xacktar. Your squad has set down in an abandoned temple excavation...What awaits in the dark?7.6k downloadsupdated 9 y ago
• TTears for Tarnorby EzekelDISCLAIMER: I'm adding this to the workshop for historical purposes, as the version of Tears for Tarnor that is included with Reactive Drop is a more recent build than the last publically released version that I put out all those years ago. So for the most up-to-date Tarnor experience, I recommen...7.5k downloadsupdated 10 y ago
• OOutpost 7by BeanRadio contact lost with Output 7. Investigate.7.1k downloadsupdated 6 y ago
• SSINTek corp.by Rock N RollThis map was found by me on the Internet, its author Target359 did not finish it and abandoned it, I wanted to get in touch with him but he didn't get online for more than half a year, so I decided to finish it. Those who played the original version of the map, they will understand how much the m...7.0k downloadsupdated 8 y ago
• EExtermination Campaignby 5564653254This is what have become Tilarus-5 in Reactive Drop. Extermination version 1.5 is a campaign which unites these maps: Midnight Harvest Campaign by Jarhchief Arctic Infiltration by Specur Area 9800 by DK9800 Productions. This campaign was updated. See homepage Cold Catwalks by Hemuuuli / SJ Yanaur...6.9k downloadsupdated 10 y ago
• RRevenant - The Lost Voyageby Zerohorror themed campaign (7 maps) + 1 intro map and +1 unfinished ending map You are a marine scout (and/or squad) in a deep cryosleep as your ships AI systems have been patrolling the nearby system, you are awoken to find a distress signal coming from a crashed ship on a red planet. you must inves...6.7k downloadsupdated 8 y ago
• CCrazy Cornerby Ghost AppleA 4 map campaign with custom gameplay ideas made by dante_6.2k downloadsupdated 10 y ago
• Sseri exp mapsby 76561198334261263seri exp bolumu exp maps5.9k downloadsupdated 9 y ago
• HHiveby Ryder.JMarines we have received an emergency beacon from the genetic lab at LVR-784,but we have no response on the comms! Hustle up and investigate the situation! This is my old campaign from alien swarm, it contains only two maps but they are bigger than the average small maps in AS. Playing with bots...5.8k downloadsupdated 10 y ago
• BBlitz Campaignby jhheightThis campaign consists of 6 maps, each of them were made in 2-3 hours in a speedmapping event. Which means that their quality is low and they might contain bugs. It was an event to try and make something as good as possible in a very short amount of time. More maps might be added in the future wi...5.8k downloadsupdated 4 y ago
• NNitro Canister MRby RevenantIAF Command have lost connection from small research facility.You need to check it and find the reason. Created by Tien,updated by Orange5.8k downloadsupdated 9 y ago
• ZZoidberg Reactor Campaignby RevenantThis is a two-mission campaign by lundiplutzmus5.7k downloadsupdated 9 y ago
• BBeyond_Limitsby ターニャ2 map pack medium map x 25.5k downloadsupdated 9 y ago
• RRevenantby ZeroA horror themed map. Started as a project to enjoy and play with a friend. Full campaign version V1 on 31st october 2018 it can be found in the link below: This map is an overall limited idea of the theme that this campaign will contain. It contains an example of the way the story will build. As...5.4k downloadsupdated 9 y ago

116 campaign 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.