Just like the metapod and kakuna of old! Good stuff

A little bit confusing what you have to do, but it's ok. Good work!

I played this for a bit and I think as it currently stands it's probably much stronger as a 2 player game than a 1 player game. It really needs some kind of scoring system in 1 player so you know how long you've been going at it. But, it is pretty fun to try and get the timing just right even when you're playing on your own.

The game looks and sounds fine, the gameplay loop is fun enough and I can imagine playing this game on NES.

However I think I wish that losing energy for spinning was faster so that you get to take more risk if you want to get further in combination with some sort of objective either in the form of a score system or of a single level you need to reach the end of instead of an endless mode (ignore this part if the game is in fact not endless and I'm just too bad to get to the end ;) ).

The game could have the stones breaking when you spin succesfully to help getting a feeling of reward
and the turtle like at least a color tint change for a few frames as it gets hit