Released Apr 20, 2017
Free Very Positive
Alien Swarm: Reactive Drop
By Reactive Drop Team
Followers
—
Reviews
23,875
Very Positive
Players yesterday
179
at the busiest moment
Owners
200K–500K
estimated
Steam data
Everything Steam lists for Alien Swarm: Reactive Drop · record updated 16 hours ago
Overview
App ID563560
Release dateApr 20, 2017
Last change number40073245
Last record update16 hours ago
App info
- App type
- Game
- Developer
- Reactive Drop Team
- Publisher
- Reactive Drop Team
- Steam profile
- Counts toward game count and achievement totals · checked Nov 1, 2025
- Franchise
- Alien Swarm
- Website
- reactivedrop.com
Platforms
Windows
- Steam Deck
- Unsupported
- Controller
- Full support
Features
19
Single-playerMulti-playerOnline PvPCo-opOnline co-opCaptions availableSteam CloudIncludes level editorIncludes Source SDKSteam AchievementsSteam WorkshopStatsSteam LeaderboardsPvPFull controller supportLAN PvPLAN co-opHDR availableFamily Sharing
Related apps
Patches
Builds
2| Build | Branch | Updated |
|---|---|---|
| 25395480 | beta | Sep 18, 2026 |
| 25157701 | public | Sep 6, 2026 |
Depots
Depots
4| ID | Name | Systems | Size | Download | Manifest |
|---|---|---|---|---|---|
| 228989 | — shared from 228980 | Windows | — | — | — |
| 228990 | — shared from 228980 | Windows | — | — | — |
| 563561 | — | All | 2.61 GB | 817.7 MB | 5046852761119434947 |
| 563562 | — | All | 4.06 GB | 2.38 GB | 6606417648698797399 |
Branches
2| Branch | Build | Updated | Access |
|---|---|---|---|
| public | 25157701 | Sep 6, 2026 | Open |
| beta Latest changes. Probably broken. | 25395480 | Sep 18, 2026 | Open |
Configuration
Install foldersteamapps/common/Alien Swarm Reactive Drop
Launch options
1| Executable | Arguments | Systems | Description |
|---|---|---|---|
| reactivedrop.exe | -novid | Windows |
Cloud saves
Space per player100.0 MB
Filesup to 500
Save locations0
Data from public Steam pages, updated daily; 1 day of history. Owner counts are estimates. LaunchRivals is not affiliated with Valve or Steam.