An ad for Universal Studio's Halloween Horror Nights in Singapore was aired in 2015, and became well known for its effective jump scare.
This ad, for obvious reasons, contains a viewer discretion notice at the first few seconds. After it disappears, we're treated to the moon going through an eclipse-like effect called "Blood Moon". This summons a number of dark figures who wreck havoc. Eventually, the ad displays a graphic shot of a body being dragged off, followed by the attraction advertisement. Just as the ad seems to stop, we are assaulted by a bloodied face roaring into the camera before abruptly cutting off.
WARNING: This commercial contains a screamer.