Developer posts and news about this game.
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
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
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
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.
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.
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
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
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 longe
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 alway
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 mater
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 fir
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
Mapping Competition 2024 Winner Downed Station by legomanas 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
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 b
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
Commander, The Office appreciates your hard work on the anomalous materials project. The folks in the lab say they'll be ready for phase 2 soon. We'll let you know when it's ready. You'll know it when you see it. Oh, and happy wrath month. Dr. Helvetica Scenario Ecological Consis
We've extended the deadline for submissions to the 2024 mapping competition until the end of July, so you have two extra months to make your mission. An update has been released with the following changes: Balance Reduced the attack speed of drones that are on fire by 40%. (Or 28
Fixed an issue that caused alien corpses to fade slower than intended.
Fixed an issue that was causing dedicated servers to crash when a player connected.
It's Alien Swarm: Reactive Drop's 7th birthday, which means it's time for our second annual mapping competition! The theme this year is Space Station . Create a standalone mission (of any type) that takes place on a space station or other large spaceship. Here are some ideas to g