Hey !
Thank you for your interest, unfortunately, this prototype is now discontinued. In fact, I should have taken it back from 0 (structure of the code/project is a real mess) but I just improved it and fixed bugs for my portfolio (the project was presented in February 2019 as school project). You can change the size of the window, but anyway, the game is not optimized at all :( (even on my laptop, GTX1060 6GB, it's bad).