Thanks for the short comment/review!
Regarding the questions you had,
I have been planning with a friend of mine to make it bigger, with a story being involved in it, making the experience more polished and better than it is right now.
Plans to have more difficulties have also been in my mind, of course, in order to do that, the first two difficulties must be 'nerfed' first in order to provide a better experience for beginners.
If you have any ideas you might want to share that could improve my game, feel free to do so.
Thanks for playing my game!