Alien Swarm: Reactive DropAlien Swarm: Reactive Drop was released on April 20, 2017 by Reactive Drop Team who also developed the game. Alien Swarm: Reactive Drop is an isomorphic actionion shooter.

Alien Swarm: Reactive Drop extends Alien Swarm, bringing more of everything: maps, aliens, game modes, guns… And most importantly Steam Workshop support.

This version has the same gameplay as the original Alien Swarm, the original difficulty settings have been retained.

Lots of improvements compared to the original as well. Lots of weapons to play with. The same fast pace is just as riveting as before. A low lag connection is needed to play this game properly.

The game includes the Jacob’s Ladder campaign along with several others properly integrated into the game.


  • Tactical co-op for up to 8 players with a top-down perspective
  • Steam Workshop support for community maps and challenges
  • New co-operative campaigns
  • Challenges: Modifications of the game, just like Mutations in Left 4 Dead 2
  • PvP: Deathmatch, Gun Game, Instagib, and Team Deathmatch
  • Singleplayer: Play with improved bots on all our official maps
  • New Aliens: HL2 antlion guards and more
  • New Weapons: Desert Eagle, Devastator, and Combat Rifle, with more to come
  • Over 100 Steam achievements
  • Leaderboards: compete with your friends for the fastest mission completion
  • Improved spectating: see hacking minigames and mouse movements in real time

The game retains the same speed runs made popular with the original. So much more in this game it has to be played to really understand it.

The level editor and the Steam SDK will make this game a mod favorite.

This game features Steamworks with achievements.


Operating System Windows XP or better
CPU Intel® Pentium IV 3.0 GHz or better
Memory 2 GB or more
Hard Drive Space 4 GB
Graphics Hardware DX 9: 128 MB or more
Network Broadband Internet Connection Required



Alien Swarm: Reactive Drop screenshot