Version 0.18.4 released

• Wave defense difficulty will scale with online player count.
  
• Wave defense hard difficulty will give 50% less bounty on each kill.
  

• New sound for small explosion.
  
• Combat robots now have their own explosion sound.
  
• Shotgun has more variety so it sounds less repetitive.
  
• Vehicle impacting wooden objects (e.g chests) now sounds subtly different to crashing into trees.
  
• A few minor volume level changes including lowering the offshore pump and electric furnace.
  

• Fixed a crash when saving fails due to mod issues. more
  
• Fixed a crash that would happen when the player entered a vehicle when some biters were aggroed at them. more
  
• Fixed that cargo wagons built while a train is moving didn't animate the doors correctly. more
  
• Fixed an error when using modded night vision defined in zip files. more
  
• Fixed a performance issue with assembling machine result slot tooltips. more
  
• Fixed that items marked with the mod-openable flag couldn't be opened from the quickbar in some cases. more
  
• Fixed that train could fail with chain signal sequence escape maneuver when path goes multiple times through a rail segment.
  
• Possibly fixed seam on terrain at certain position and zoom level. more
  
• Fixed that sometimes wave defense would trigger victory before killing all spawners. more
  

• Fixed that writing to LuaForce::stack_inserter_capacity_bonus was limited to 200 instead of 254.
  

• Changed definitions of map colors of beacons, pipes, heat pipes, roboports and steam engines, so they can be overridden by friendly_map_color. more
  
• Added ParticlePrototype::ended_on_ground_trigger_effect.
  
• Added fuel burnt results to the item tooltip.
  
• Loader remnants will pick rotation the same way as underground belts do. more
  

You can get experimental releases by selecting the '0.18.4' beta branch under Factorio's properties in Steam.