Absolutely, ridiculously brilliant!
The premise of the game is so simple and the atmosphere seems to be just plain, creepy, but it gets better and better as the time passed and the player it forced to venture towards a horrific discovery. This game scared me and it left the empty void, which most games don't do that often. The sound design as well as the mechanics were done perfectly.
Great job on the game developer! Best of luck with the future projects. Cheers ✌