This has been my first experience with Indonesian horror, and while Kuntilanak is far from a masterpiece it made for quite an enjoyable watch. This is the sort of film for which one would have to lower their expectations and take the cultural differences into account. While obviously made for younger viewers (and yet containing certain features and scenes I personally wouldn't want my young ones to watch before their tweens) Kuntilanak has some pretty great qualities:
First, it feels like a nightmare, but an actual authentic one, "realistic", unlike many Hollywood attempts of portraying scenarios allegedly originating from nightmares that simply break immersion and suspense of disbelief.
Second, it takes normal everyday things from children's lives like a mischievous laughter and twists them, deforms them into a cacophony that combined with the dark eerie mood becomes truly terrifying.
Third, one would think the exaggerated comic reliefs presented by the children's infantile interactions with each other and with the other characters (made all the more apparent and dominant by changes in soundtrack and sound effects) would damage (if not completely ruin) the dark mood and fear factor, as well it should! But it somehow doesn't. On the contrary, it makes the following scary scenes that much more terrifying.
All in all, while I can't ignore the film's shortcomings (for instance, I went to sleep before the final 30 minutes and continues the next night, which isn't a very flattering thing to say about a film from the horror genre which is supposed to be suspenseful and compelling) I must admit that I enjoyed it quite a bit. Far from great, but definitely good (in my opinion) for anyone willing to momentarily change their standards and open their minds.