IMPORTANT
There is a bug that causes you to be unable to release your supernova on the 2nd and 3rd level on the first time round.
We found that killing yourself / dying (once) on level 2 and level 3 will ensure the variables for your supernova will be reset properly and you can release it at 100% charge.
Don't worry, dying will only make you restart the level, but closing the game will start you back at level 1.
Our sincere apologies that this bug was only discovered after the jam has ended.