i love it that when rewinding you see your moment back, i would have 0 idea how to program this myself. and then the line of going back and the chancing colors effecting the lines. it looked simple but these details made it look great and a style on its own. But i was not sure why i would need a mouse. would make more scene to have to play with keyboard only instead of using the mouse. And i got stuck after the first key, still no idea where to go! but that can also be me and my horrible skills, think i will try again after reading the comments maybe i was not the only one ;)