Wow, thanks a lot for your comment!
I am working on a new implementation, with much better optimization. This first one was useful to establish the mood and set the game's basic mechanics. I will make a tutorial to clarify a few things, maybe even a tutorial level. I hope you come back to see the improvements and test again. I am at the prototype level, so a lot of things can and probably will change. With your help and others, I am sure I will achieve a better version of this game. Thanks again for your comment and tips. It was very helpful and encouraging to keep investing in this, to believe in this project.
Cheers!