Thank you for playing my game! Ask as many questions as you want! The font is "Decaying Felt Pen" and can be found on dafont.
The 3D decay effect was made from a shader that changes the alpha hash amount and scale. However, godot gl_compatibility doesn't support alpha hash transparency so the shader just broke on the web exports.
I will make a video on my channel next week going into more detail on my game and the game jam as a whole if you're interested.