This latest update adds configurable mobs to multiplayer. I've added 4 new game variant options to facilitate this:
If mobs are enabled, mob emitters will appear at various locations on the map and spit out alien parasites periodically. Frequency defaults to 1 second, meaning 1 emitter spawns a mob every 1 second. When the max mob count is reached, they will stop spawning until some die off. The default max is 20, you may experience frame rate issues if you push this value any higher than that.
Check it out!