I recall being more than a bit disturbed by seeing Chiller for the first time in my local arcade. But, once that wore off it wound up being one of my favorite Exidy shooters of that generation.

As far as my first recollection of a home game that was scary ... Beyond Forbidden Forest for the Commodore 64 was amazingly atmospheric considering the limitations of the system.

The music and sounds effects are really chilling and the death sequences are pretty intense all things considered. I'm pretty sure that the first time I ever booted it up I was home alone in the dark by myself and I had to summon some courage to keep playing.