I've seen this concept before in Replay (the idea of playing a game within a game) but the execution in this was really good. Great use of audio, specially with the door knocks at the end. Honestly, the only flaw in this is that it is so short, I could easily see this being expanded into a longer game, with the player trying to survive both in its room and in the game they are playing. Really cool little experience, good job dev(s)!