You need to mouse click on the game in order for it to be able to detect keypresses.

Demo showing the parallax background and giving you an idea what it will be like to fly by farting.

In the lower right, press the expand icon to make it full screen

Hit ESC escape key to exit full screen.

For more information on what I'm doing - check out:

Flatulent Cupid Work In Progress 2023-02-04