Thanks for playing! I didn't think of adding a restart button but it was an oversight and I will remember next time. The waiting is very important however, as without it, a false fail can happen easily (like when the ball hits terminal velocity on an incline)
The art was a gamble and I'm sad to hear you didn't like it, I am a pixel artist normally but I decided to experiment with plain shapes and vector art for this as its something I don't normally do, it was an enjoyable experiment but I know I need to learn more shading and techniques with vector art.