So, here's how it went for me: first time, I accidentally hit Ctrl+W and closed the tab while in the town, so I had to restart. I got through the horror part, but managed to walk past the staircase back up and fell off the floor of the world, so I started again. I hit a wall telling me I shouldn't be here and may have to restart, but that was fixed by going back for a bit. Then I stumbled through the wall in the final room without checking out the submit button, so I went through the whole game another time. I literally played in a loop, in a game that's all about being in a loop of developing a game. And then, at the end, the game just loops back to the start.
What can I say, you nailed the theme in the most meta, fourth-wall-breaking way possible.
On a more serious note, a suggestion for next time: try finding an interesting gameplay mechanic first, and then worry about the theming. Also, 2D may be the easier start.
Oh and I read the pause menu of course. And the sign in the first room that said "Attempt: 3" when I got back there at the end.
Anyways, congratulations on your first game jam!