I genuinely laughed so hard at the start of this XD Great concept!! I also like the addition of the scrollwheel to move forward or backwards a lot. I never considered it to be a thing, even.
The '!' graphic also makes you die unfortunately, maybe you can make it so the flappy bird can only hurt you? Though I'm sure this is just a bug!
Maybe you could also add some things to pick up, like coins you can spend in a shop (being able to buy the ability to attack for example?)