PCGame

Alien Swarm: Reactive Drop

Free top-down alien shooter with classes and eight-player co-op

Reactive Drop Team · Released Apr 20, 2017

ActionFree To Play

Reviews
Overwhelmingly Positive
95% of 26K
Recent reviews
Very Positive
95% of 65 in 30 days
Players
135
daily peak, Nov 7, 2026
Steam Deck
Unsupported
Last update on Steam
2 months ago
Sep 6, 2026
Minimum PC
DirectX 9 GPU
2 GB RAM · 7 GB disk
Full requirements

What is Alien Swarm: Reactive Drop?

This top-down, class-based shooter follows a team fighting aliens across campaign missions. You use weapons to clear mission objectives with other players, play solo with bots, or compete in PvP matches.

For you if...

  • +you want tactical co-op missions with a group
  • +you like replaying missions with different tactics and weapons
  • +you want community maps and custom challenges

Not for you if...

  • −you dislike mission-based shooting that can feel repetitive
  • −you prefer cooperative missions without required team roles

What players say

95% of 25,726 reviews are positive · 95% of 65 in the last 30 days

Players praise the free co-op, especially with friends, and the variety added by weapons and community maps. Some find the missions repetitive or dislike how certain objectives require specific classes; others report problems with AI teammates.

Players over time

▲ +24% vs a month ago

Players online on Steam, one sample a day.

Highest since Sep 2026: 151 players on Oct 25, 2026.

Show the data
DayPlayers
Nov 7, 2026135
Nov 6, 202674
Nov 5, 202678
Nov 4, 202686
Nov 3, 202681
Nov 2, 202684
Nov 1, 2026136
Oct 31, 2026123
Oct 30, 202677
Oct 29, 202696
Oct 28, 202661
Oct 27, 202672
Oct 26, 202680
Oct 25, 2026151
Oct 24, 2026106
Oct 23, 202664
Oct 22, 202670
Oct 21, 202659
Oct 20, 202661
Oct 19, 202672
Oct 18, 202698
Oct 17, 2026107
Oct 16, 202670
Oct 15, 202655
Oct 14, 202663
Oct 13, 202680
Oct 12, 202670
Oct 11, 202696
Oct 10, 202676
Oct 9, 202670
Oct 8, 202653
Oct 7, 202665
Oct 6, 202659
Oct 5, 2026100
Oct 4, 2026121
Oct 3, 2026125
Oct 2, 202674
Oct 1, 202677
Sep 30, 202686
Sep 29, 202686
Sep 28, 2026113
Sep 27, 2026138
Sep 26, 2026107
Sep 25, 202699
Sep 24, 202661
Sep 23, 2026108
Sep 23, 202652
Sep 22, 202646
Sep 21, 2026100

How many players finish Alien Swarm: Reactive Drop?

17% of Steam players have unlocked «Easy Campaign: Jacob's Rest», the achievement for finishing the main story.

Share of everyone who owns the game on Steam, including those who barely played it. Updated weekly.

Screenshots and trailer

Alien Swarm: Reactive Drop screenshot 1

Alien Swarm: Reactive Drop system requirements

Minimum: DirectX 9 GPU, 2 GB RAM, 7 GB of disk space.

As published by the developer.

Can my PC run Alien Swarm: Reactive Drop?

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Minimum

OS
Windows® XP or above
Processor
Pentium 4 or newer
Graphics
DirectX 9 compatible video card with 128 MB, Shader model 2.0b. ATI X800, NVidia 6600 or better
Memory
2 GB RAM
Storage
7 GB available space
DirectX
Version 9.0b
Notes
Disk space requirement depends on installed Workshop addons.

Does Alien Swarm: Reactive Drop have co-op or multiplayer?

Yes: co-op online and LAN; PvP online and LAN. It also has a single-player mode.

Does Alien Swarm: Reactive Drop run on Steam Deck?

Unsupported No: Valve rates it Unsupported on Steam Deck.

  • Not supported on SteamOS

PC version details

DRM
None declared on Steam
Controller
Full controller support
Platforms
Windows
Achievements
198
Steam features
Workshop, Cloud saves, Family Sharing
Languages
Full audio: English. Text only: French, Italian, German, Spanish - Spain, Korean, Portuguese - Portugal, Russian, Simplified Chinese, Traditional Chinese, Ukrainian, Vietnamese, Japanese, Portuguese - Brazil.

Does Alien Swarm: Reactive Drop use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Nov 6, 2026. How to filter AI games on Steam

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