I went into this without reading the description thinking all of the horror ambience early on were flukes. I was greatly mistaken. This is probably the best horror game I've played, period (although I don't game much anymore). 

The slow build, how well you write their chemistry so that you're rooting for them to be happy only for it all to come crashing down. The possibility for a "happy ending" that leaves you with a disquieting uneasiness.

Needless to say, this has definitley encouraged me to play more pixel games!