This game has a good atmosphere. The lights shutting out in the third room was unexpected and gave me chills.
Unfortunately, I wasn't able to complete the game. I got stuck on the "It looks like any other rock. They'll never know" riddle. Right now. I think it is difficult to figure out what you're supposed to do next. There's so many things in the environment that you can't interact with that I spent a good chunk of the time wandering the room trying to figure out where to go and what I could click on. I feel like having more clues for the player would help alleviate this issue.
Nice job on this!