Pinball City Park: what is this, some sort of Lo-Fi?! I am down :D. soft and sweet, with the type of nice chords I would expect in lo-fi. I think it is an interesting choice to let the melody from 0:12 to 0:20 have 4 repeating notes, yet from 0:20 to 0:23 to let it have 5 repeating notes. Took me a while to grasp what was going on.
Night in Arcade Avenue: that is the banging pinball theme I was expecting. Does the city only come to live at night? Since there is no day version :). Really banging song, awesome job! There is a bit of a blip at 1:35, not sure if that's intended.
Three Days of Rain: more Lo-Fi I see. I was afraid that lo-fi might not suit a pinball city well, but the instrument choices at least reinforce the concept. It is my least favorite of the three, as the drum is a bit too loud for my taste (and the intro 'reverse-cymbal-y' sounds are not my cup of tea (though they are cool).
It's always a trade-off whether to publish multiple songs, as one song can either bring all of them down, or strengthen the feel. You did a great job capturing different sides of the city. My favorite is 'Night in Arcade Avenue', which is also the most arcade-y song. Well fucking done :D