It's a solid premise - childhood creepypasta videogame hilarity - and I would rate it higher but it also induced the only kernel panic I've ever seen. Leading to an amusing few minutes while I was rebooting and trying to figure out whether I was dealing with a computer game or a cunningly disguised computer virus.
((Spoiler - click to show)The endgame dynamics were a bit much for my OS, apparently.)
So, genuine sense of terror achieved! Mission accomplished.
Recommended for play: go all out and play at midnight. In a thunderstorm. With the lights off.