Enjoyed the meta narrative with playing a game within a game - the first puzzle had me stumped for a second even though I knew how it worked! Think it ended a little abruptly and would love to see this universe expanded upon (who is the monster, for example - how did the player come across the game in the first instance) but some great world-building and intuitive puzzle design (such as the volume control etc)
Look forward to seeing (and playing) more in the future!