Nice game!
SPACEBAR will jump, in case someone else is wondering!
I at first was confused and sent bunny to their doom, because the enter key started the game, but spacebar is the jump button. Not sure if anything else also works for input. Some instructions would help!
Got to 243! It is a bit relaxing, actually, and I really fell into a trance around 50 or so onwards. Watching the moon grow and eventually do the thing was an interesting but fair feeling way to make it harder. Great job!