2026-04-20 01:48 UTC · Community Announcements · Ben Lubar
It's time once again for Alien Swarm: Reactive Drop's birthday. We're having a smaller one this year since a lot of our core contributors have been busy with other projects, but we've still got a lot of improvements to share and the usual week of double experience. AMD GPU Driver Crash The game now automatically disables high quality realtime shadows on AMD graphics cards that are affected by the driver bug. We've noticed that this was causing crashes when loading into a mission, but weirdly, the first launch after updating the driver was fine. We encourage anyone who has a graphics card that
2026-02-06 06:00 UTC · Community Announcements · Ben Lubar
Every year, Valentines day is a time to be with friends and loved ones and reflect on your friendship and love. Well, not this year! In 2026, it's all about having simulated gun fights with friends and loved ones. Welcome to Steam PvP Fest 2026. There's nothing more romantic than a space marine deathmatch. You Deserve a Medal {STEAM_CLAN_IMAGE}/27357479/09d2dc6f1fa689d30b9c341e6b19c07f7856cae1.png Participate in a Deathmatch skirmish in Alien Swarm: Reactive Drop during Steam PvP Fest 2026 to earn a medal you can show off on your Commander Profile. Twitch Drops We're trying something new durin
2025-11-01 14:05 UTC · Community Announcements · Ben Lubar
Highlights Added a SynTek Residential themed main menu background. The camera feeds that display behind briefing have less static and are less distracting. Many guns are now more accurate while crouching. Weapons Weapon recoil has been changed on several guns. A coding error was previously causing "flattened" recoil to work differently when aiming north or south versus east or west. 22A3-1 Assault Rifle: Normal spread: 03° (wide) × 03° (tall) → unchanged. Crouch spread: 03° × 03° → 01° × 01°. 22A4-2 Combat Rifle: Normal spread: 03° × 03° → unchanged. Crouch spread: 03° × 03° → 01° × 01°. 22A5
2025-09-20 19:16 UTC · Community Announcements · Ben Lubar
A minor update has been released for Alien Swarm: Reactive Drop. Fixed a client crash in the Traitors game mode. Added a note in the Swarmopedia about the IAF Medical SMG's increased accuracy while crouching. Added a description for EC-02 Stun Grenades in the Swarmopedia.
2025-09-03 21:57 UTC · Community Announcements · Ben Lubar
Fixed black bars appearing on the sides of the screen for screen resolutions with an aspect ratio wider than 16:9.Fixed traitor players showing as having 99 player kills in the scoreboard.Fixed buzzers bleeding red blood on the client.
2025-09-01 01:07 UTC · Community Announcements · Ben Lubar
Special thanks to Dmitriy, Mithrand, jhheight, 法克尤尔马泽尔, and Grimowy for the majority of the changes in this update. New Game Mode: "Traitors!" Commander, As the human shield, the IAF has achieved great victories in countless battles against the swarm, but also suffered tremendous losses. We sincerely thank you and your squad members for your outstanding contributions in defending against the alien threat over this long period! Now, the IAF faces an unprecedented crisis! In the many confrontations, the aliens have quietly evolved: Their Queen has acquired a special ability - mind control. Durin
2025-07-22 15:38 UTC · Community Announcements · Ben Lubar
Added rd_lobby_query_servers convar (default 0 until the problem with the Steam API is fixed) to disable server list queries, which are currently not being properly filtered to just Alien Swarm: Reactive Drop servers by the Steamworks API.Note: This means that HoIAF servers are not labelled in-game currently. Progress is still tracked, and HoIAF servers can be found via the Steam Client "Game Servers" list or a website that has a server list, such as https://serverlist.reactivedrop.com/server-list, neither of which appear to be affected by the filtering issue.Reduced the performance impact of
2025-04-20 00:00 UTC · Community Announcements · Ben Lubar
It's that time of the year again. The anniversary of Alien Swarm: Reactive Drop's Steam release. As always, Alien Swarm: Reactive Drop is only possible due to contributions from community volunteers in the form of donations, code, translations, and game content. Also as always, there's a double experience bonus going on all throughout this week in-game, and if you look hard enough, you might be able to find some cake. Mapping Competition 2025 This year's theme is "Residential, Commercial, Industrial". Tag campaigns, missions, or challenges with RCI2025 on the Steam Workshop to enter. Competiti
2025-04-20 00:00 UTC · Community Announcements · Ben Lubar
It wouldn't be an Alien Swarm: Reactive Drop anniversary update without a shipload of fixes! Missions Jacob's Rest: Landing Bay: A crate in the welding tutorial room no longer allows bullets and grenades to pass through. Jacob's Rest: Deima Surface Bridge: The Bloodhound no longer does friendly fire damage. Jacob's Rest: Deima Surface Bridge: Moved the forklift and box on the bridge slightly so they are no longer hovering in the air. Jacob's Rest: Sewer Junction B5: Extended the escape area to include the southeast corner of the breach. Jacob's Rest: Timor Station: The Bloodhound no longer doe
2024-12-31 22:59 UTC · Community Announcements · Ben Lubar
It's 2025, and to start the year off we have a pile of community-requested fixes! Commanders searching for anomalous materials together may find them quicker. Added convar rd_chat_item_messages to opt out of messages about players obtaining items such as medals and crafting materials. (Suggested by Ax-now) Fixed commanders who opted into phase 2 but not phase 1 not being able to see certain informational UI elements in menus. Jacob's Rest: Deima Surface Bridge: Removed marine hints from an out of bounds area. (Reported by typical russian) Jacob's Rest: Deima Surface Bridge: Extended triggers o
2024-11-30 23:20 UTC · Community Announcements · Ben Lubar
It's December, and that means it's time for the monthly update! There's a message here, addressed to you. M868 Flamer Unit: Adjusted friendly fire damage and duration on normal friendly fire difficulty. (Thanks, ModdedMarionette). Hardcore friendly fire is unchanged. Friendly fire with a flamethrower now once again ignites immediately. Damage now scales up linearly rather than slower at the start and faster at the end of the burn duration. Afterburn duration is decreased by the amount of time since the previous friendly fire incident, minus two seconds. Maximum afterburn duration is 100%, and
2024-11-01 01:12 UTC · Community Announcements · Ben Lubar
22A7-Z Prototype Assault Rifle: Removed damage falloff from alternate fire. Now does 1 damage regardless of distance for any target it hits rather than some fraction of a point of damage. IAF Incendiary Sentry Gun: Fixed a 2010 era bug causing this sentry to consume 2.5 ammo per shot. Fire Extinguisher: This item can now always be picked up both in the temporary slot or in a normal weapon slot, rather than being decided per map location. Change rd_fire_extinguisher_force_temporary if this breaks your challenge. Mining Laser: Fixed a visual issue where the beam would appear to follow the player
2024-08-31 23:02 UTC · Community Announcements · Ben Lubar
Mapping Competition 2024 Winner Downed Station by legomanas {STEAM_CLAN_IMAGE}/27357479/96f9509932b257ed89058f3bcb4450083fe834de.png Changes in this update Removed the cl_interp convar. The game will now act as if it was set to 0. Improved the error message that is shown when attempting to connect to a server that hasn't updated yet. Fixed a particle related crash due to the "emit noise" operator being broken in this engine build. Fixed a possible crash when navigating the controls menu using a keyboard. The sound for a marine being burned but not ignited now plays for other players as well. S
2024-07-31 22:17 UTC · Community Announcements · Ben Lubar
This month's update is mainly related to weapon quality of life improvements. X-33 Damage Amplifier: Fixed a carried beacon not reliably connecting to the gun of the marine carrying it. X-33 Damage Amplifier: rd_buff_grenade_attach_sw_auto can now be set to 2 to restore the old behavior of allowing a special weapons marine to carry multiple damage amplifiers. You can still only pick one up from the ground if you are not already carrying one. Persistent damage bonuses still do not stack, so this is only useful if you want to bridge the gap between two damage amplifier durations by slightly over
2024-07-14 22:37 UTC · Community Announcements · Ben Lubar
New material shader: RDCharacter This replaces the VertexLitGeneric shader and the AlienSurfaceFX and NightVisionSelfIllum material proxies for characters in Alien Swarm: Reactive Drop. For Modders If your mod does not contain VMT files for characters, you do not need to make any changes. If your mod's VMT files for characters start with the word "patch", you are likely already using the updated shader. If your mod's VMT files for characters start with the words "VertexLitGeneric", see below. If your mod's VMT files for characters start with any other words, you are on your own. If you do not
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