Getting that spooky lighting effect for Halloween or Haunted House can be tricky, The lighting has to be just right, it needs to set the mood and accentuate the kind effect your looking for. One of the most popular lighting effects to use is UV Black Lights or other color spot or color washing lights like LED Par Cans or LED Wash Bars. These types of lighting are compact, and easy to set up and use and will give you that really cool Halloween spooky effect your looking for.
Laser projectors are another common effect to use to give your Halloween party or Haunted House a really weird mind blowing effect is used in interesting ways.
Also don't forget a Fog or HAZE Machine to really add low lying fog to the floor or fill the air with a scary fog that will emphasize the lighting or laser effects and make all the difference for your Halloween or Haunted House