Version 0.18.20 released

• Added new environmental trigger effects for grenade, artillery and nuke explosions. more
  
• Added 3 level 'First steps' tutorial Campaign. more
  
• Mini-tutorial improvements.
  

• Moved Compilatron and Compilatron speech-bubble entities from demo to base game files.
  
• Removed Introduction Campaign.
  
• Removed Compilatron chest, Compilatron roboport, Compilatron logistic chest.
  
• Removed Tutorial/Campaign Lualib (base/lualib).
  
• Removed other campaign-only prototypes, such as styles, sprites, sounds.
  

• Fixed that thumbnails wouldn't show in the update-mods tab of the mods GUI. more
  
• Fixed that LuaSurface::spill_item_stacks return value didn't work correctly. more
  
• Fixed that the research progress of the current tier showed for next queued tier in the technology GUI. more
  
• Fixed that the game didn't validate modded rail-planner item type values and would crash in some cases. more
  
• Fixed that modded units with consider-tile-transitions in their collision mask would cause the pathfinder to crash. more
  

• Empty layers in sprite or animation definition will yield an error now. more
  
• Added support for playing a sound when using smart-pipette.
  
• Added support for playing activate/deactivate sounds for night vision.
  
• Added support for playing a sound while an resource-style is being mined through mining_sound.
  
• Added mod-setting value "hidden" to hide mod settings from the GUI.
  
• Added 'invoke-tile-trigger' and 'destroy-decoratives' trigger effects.
  
• Added 'rotate-offsets' to the create-particle trigger effect.
  
• Added 'trigger_effect' to tiles. It is called with the 'invoke-tile-trigger' trigger effect.
  
• Added 'trigger_effect' to decoratives. It is called when the decorative is destroyed with the 'destroy-decorative' trigger effect.
  

• Added on_pre_script_inventory_resized and on_script_inventory_resized events.
  
• Added 'allow_paths_through_own_entities' and 'no_break' path finding flags.
  
• Added LuaModSettingPrototype::hidden read.
  
• Added 'to_be_deconstructed' to the options for LuaSurface::find_entities_filtered. more
  
• Added LuaGuiElement::badge_text read/write.
  

You can get experimental releases by selecting the '0.18.x' beta branch under Factorio's properties in Steam.