enjoyed the game my friend :) great work!
It was intended, but only because the enemies had much more health in an old version of the game, so being able to lie on the floor made it easier to kill enemies that spawned on the lower part of the screen. Now that the enemies have much less health and spawn much faster, I guess I could make it so that you die when you touch the ground like in Flappy Bird.
Thank you for your feedback!