99% of the gameplay in 3D Sonic fangames with "momentum physics" is trying to land on the right spot after being launched into to the air off a ramp at high speed. They were novel once upon a time, but it's no surprise that nobody has managed to turn that into a compelling full game. The games also tend to have an issue of making Sonic about the size of a mouse. Re the whole 06 kiss debate... It looks weird because of how realistic Elise is. I could say more, but that's the crux of it. It would be far less egregious (read: not necessarily good) if Sonic was kissed on the lips by anything other than a realistic human.