The bells were a nice touch to add. I personally find it really hard to do chiptune music, since I can never get anything to sound the way I want it to and it always fells annoying. You didn't seem to run into that problem!
However, I think you could use a little bit more structure in your song. After listening to it multiple times I couldn't really figure out a "leitmotif" or something similar. It felt like you had a nice melodic idea and always changed it up a bit, after each repetition.
I would advise you to just stick to this main theme or "leitmotif" for a while and just change up the instrumentation after a few measures. Introduce a new rhythm instrument for example. So the listener has always something familiar. And after you have done that for a while, you can transition into the next melodic idea and repeat the same there.
The way you did it felt a little chaotic and not that well organized. Which might reflect the nature of a pinball machine, but for a town theme is probably a little bit to over the top.