Okay, that is a tiny bit unfair, but given that most of their mainstream horror output is from legendary copy/paster Rocky Soraya, I feel like it's an appropriate joke. Monster is an Indonesian adaptation of The Boy Behind the Door, though with everything applied in a way that doesn't work quite as well when put together..... The visuals are the only good part, with some great shots and an overall suspense building aesthetic focusing on close and tight shots. There are even some well bits of swivel work that are done more than well enough, and the practicals have some satisfactory blood and violence to them. The killer doesn't really have any menace, but I feel like that's more in the overall acting and writing..... Speaking of which, the writing is one of the more lacking elements. While the lack of dialogue is a good choice, the story is very formulaic, with no actual surprises and no attempt at originality. There's very little to the characters too. No real substance to speak of..... The soundtrack feels out of tune. There's this odd western tune that always takes the viewer out of the scene, as well as some composed bits that are never timed right and never properly fit. While the sound effects work well enough, there isn't enough effort placed on them for sinister and/or unsettling effects..... The acting isn't great. The two kids, played by Anantya Kirana and Sultan Hamonangan do as good as they can, but their facial expressions are limited to either mild terror or high levels of fear, while the other two just go through their motions. The antagonists aren't exactly spooky or creepy, they're just annoying.
If you want to find out for yourself, Monster is on Netflix. If you want to save time and effort, just watch The Boy Behind the Door.
