Hey, thank you :D
This is like, second time ever that I managed to get to at the very least, prototype stage, so even if there is not much, I am still kinda proud of myself, even if the code itself is spaghetti (Buuut, I already have some ideas on how to fix that, so is fine)
Also, since you didn't see this kind of game before, if you are still interested in the concept, and want to see actual, well done falling sand game, check The Powder Toy