Pretty fun so far. At the very beginning you should probably tell the player how to go through doors. You show the controls for left, right and jump, but it took me a minute to figure out how to exit the room.
Very happy that you are having fun! Regarding the door: I think I have a small "E" above the first door, but it's probably hard to see over the background. I added it in the description, and if I have time, I'll make it more clear
