Finished the game, thought it was great. Yeah the difficulty is pretty unforgiving but I kinda liked it that way. But, at least, there should be something special to say 'you're done! You finished!'. When I completed the last levels and the game returned me to the filled first heart, I thought 'oh boy, another layer of levels!'. But no; there was nothing. Once you're done you can't even replay or reset the game. Please at least put in some recognition of completion, and a way to replay previous levels. If you did that then this game would be perfect. Other than that, great game, thanks for the code, and I'll definitely be watching what you guys come up with next!
You're done, (for now)! Congratulations ps: replaying levels is coming in an update this week. Also I'm adding more levels which will be in an update after this next one.