Level 2000021 is a very interesting and weird level. This level requires you to let a “thing” sing a song to you. Do not move while she is singing a song to you because you will be teleported to The void if you do so. After she is done singing the song, you can walk through the door.
Entities: No entities except the thing that sings the song to you.
Entrances:
-If you fall asleep in The Hive then you have a 75% chance of being teleported here.
Exits:
-Walking through the door after the song is over. This has a 90% chance to teleport you to Level 665 and a 10% chance of teleporting you back to The Hive.