Thanks for your kind words and the great review. About the green screen I am very annoyed. Actually there would be the main menu and a little tutorial. In all other builds of the game you can see that, only the WebGL version doesn't show it. Unfortunately I did not have enough time to solve the problem during the jam.
If you want to play the fixed version again, you can do that here: https://roockie-games.itch.io/the-four-and-a-half-minute-curse-download