Ammunition Fire Sale: not my cup of tea exactly. A bit too much beat and too little melody for me, but I am more of a melody-kind-of-guy anyway. For a simple town idea however, where something simple and repetitive works very well, I think it might fit in just fine!
Haunted Daze Inn: not bad! The first melody you got going works well. While a little more variation in that initial melody is recommended (as it plays nearly consistently throughout the entire song), I do like it.
Vegan Zanzibarland: besides having a crazy fun name, it got a nice rhythm going. Nice and crazy, with a sound fitting a world both inhabited by scientific technologies (the 'buzzing') yet a simple almost-wood-sounding drum-ticking.
Overall, though repetitive songs are often not my cup of tea, I think the songs are pretty good! Mainly Vegan Zanzibarland is quite good, followed by Haunted Daze Inn.