Thanks so much for this fantastic feedback! ๐
You are not the first person to tell me that the red circles under the other cars are confusing. ๐ The truth is that they do a small amount of damage over time, so for the most part you can just ignore them initially. But the damage stacks, and certain vehicles do a lot more damage over time later on. But I realize I don't properly convey this in the game so it confuses most people who play it.
Yes the RNG can kill your run. I've been thinking how I can fix this without changing the underlying RNG patterns. I think the trade-off of a refill vs an actual upgrade is a nice one. It forces you to try to be optimal. I'll have to give this one another thought ๐
But thanks again for the kind words and great constructive feedback!