Thank you for playing! There were plans to add in a settings tab, but just ran out of time. I should've just made a button to mute the music like I've seen a few other people do in this jam.
Basically, the money is just a simple point system. Faster deliveries = more money per delivery. We also had a long-shot stretch goal of adding in more cars you could buy with the money, but came nowhere close to implementing that feature within the 1-week limit, haha. Thanks again for playing!