The idea was nice, and it was relatively enjoyable, but there are a few things I didn't like:
1) There wasn't a goal. I didn't see any sort of objective for the game, which really dragged down the experience for me.
2) Not a lot to do. I wish there were some more mechanics that you could add. For example, what if every person saved gave you money, and you could use that money for super food or something that would make Ralph go faster. Or poles that the blind people could walk into. Just little thing to make the game more interesting.
Other than that though, I liked the idea, and although it could use more refining, this is a good start! No major bugs that I could find, the art was nice, I liked the sounds, Good job!