This is so exciting my first comment! Thank you for the feedback!
1) When you mention add random I assume you mean the equations, They actually are! I just had them set random low as I wanted to focus more on speed than complex equations! Maybe I will add a feature where the randoms get higher over time!
2) Great Idea, harder answers Extra points!
3) What's your take on sound effects for each robot taken down? I was worried that if a sound played every time it might get annoying. Maybe depends on the sound effect?