June 4, 2018: For a few last days, I've working a lot with the code. I wanted to reduce memory usage, and also I encountered quite a painful bug with sounds. It took quite an effort, but now I am happy to say, that I fixed all major critical bugs, and also greatly reduced RAM consumption. How much? I lowered it from about 1.5GB RAM to just about 400 RAM. I continue searching for ways to reduce it even more, but I think that what I did is a nice result on it's own. Want to know what I did exactly? Remember, last time I said, that I barely knew anything, when I started. So, by then, I made the majority of changes with images and buttons manually, each element on it's own. I used excel to copy-paste same values, but still each element was being called manually. Now, I found a way to reduce all this code to just a few "foreach" loops. The result is great - not only it reduced RAM usage, but it also no longer requires hard and monotonous work from my side! I keep searching to improve even more.
What else can be said? Freelancers I hire do their best to finish the last images and videos. I hope to finish soon.