This was my first time going to Sparta House of Shadows and I probably won't go again.
First and foremost, the actors weren't as much scary, as they were RUDE. I would preferred to be spooked rather than screamed at. At one point, in the Disco room, one actor was nose to nose with me, screaming in my face. Not scary screaming, yelling screaming. That was totally uncalled for, unprofessional, and actually quite rude. Come around a corner and scare me, or do something scary... don't scream in my face!
The house was dark and I did get spooked when going into some rooms, but nothing scary happened, just a lot of yelling from actors. Interestingly enough, I really didn't hear a lot of people inside of the house screaming because they were scared. And when people exited the house, they were unemotional - casually walking out... not terrified like they should have been.
The lighting could have been better. A lot of dark unoccupied corners.

The outside entertainment wasn't bad, but some actors just walked around and didn't do anything to pump the crowd up.