JustSid@ you are right, I've learned (reminded) a lot of stuff while making this small game. Thank you for supporting me as well.
I've fixed some annoying stuff in the code, which were slowing down the game. Please re-download in order to get the latest version!
Edit: I've made some small fixes:
* fixed some issues with loading the level from the file (faster)
* displaying the stage counter in one line of code, for all levels