I AM SO TIRED BUT I FINISHED IT! AAAAAAAAAAAAAAAAAAAAAAAAAAAHHHHHHHHHHHHHH
RPG Maker MV (and most likely it’s successor RPG Maker MZ) supports web browser play! I used MV for my submission if you want to go check it out! You might have to go full screen on my game though because for some reason itch.io didn't format the frame size properly to RPG Maker's default game window size.
My game is called "I Cannot Remove This Monkey Suit!"