Hey! You're game is pretty well made!
The time needed to finish is pretty well balanced (for a first lvl at least), it's kinda fun and the theme is pretty well represented.
I would just regret some kind of bugs like people who stop walking sometime, but it's fine. (oh and the "Building font" is stretched sometimes (is stretched the good word? Sorry I'm not english x3 ) , but it's not a big deal!
I hope you'll do something bigger of this, it's nice really.