Alien Swarm Director Mod full release 1.0! 5 mission campaign with 4 missions built dynamically for ultimate replayability! And ASDM responds to player performance in real-time taking the Alien Swarm experience to a new level. The type of aliens and the swarm sizes will vary based on the player's current performance. The environment itself also responds to player performance, blocking certain areas or forcing players through a unique course through the level. Playing Alien Swarm Director Mod requires Steam, Alien Swarm, and the Alien Swarm - SDK. All are available for free download. See below for links for each component. I hope you enjoy playing ASDM and feel free to leave comments or make suggestions!