Nice little flappy-like game!!
That's a good start, maybe you'd want to update it?
If so, I'd suggest to display a score (and maybe store somewhere a high score) so I could now if I'm doing good (and better after a few tries).
Also, the background is a bit hypnotizing :D maybe dimmer stars could make it more easy on the eyes!
In the meatine, thanks for you game, congrats on managing to make a 1-button game!!