Particles seem to travel farther/faster (but still earn the same amount of energy, except for the effects of cycles) when the game is running at a lower framerate. You might want to fix that.
Clicking on the diamond icon next to a hobby you've spent diamonds on does nothing if you have the diamonds, which is fine (though maybe it shouldn't react to the mouse hovering over it). If you don't have 10 diamonds it prompts you to go to the store, which it probably shouldn't.
Wait... are you the only unity developer on Kongregate who actually switched to WebGL from web player when chrome cut NPAPI support?
I think I love you already.
There seems to be no reason to care about score unless a mission specifically asks for score or you're ready to go for a high score. Perhaps you could give some small bonus like 1 coin for every 1,000 points?
Also, I didn't even notice the scroll duration upgrades until I saw a comment about their prices then tried to scroll the shop. You might want to make the fact that it's scrollable a bit more visible.
In regards to the "getting too close", don't you only die when you actually have a collision? That seems to be a fundamentally different event to simply getting closer, and the same thing applies to actual love: Becoming very, very close to a person (romantically or otherwise) is exhilarating, but dangerous. Not because being too close inevitably means you will be hurt, which it doesn't, but because it becomes more and more likely that you will have, as it were, a "collision".
I quite like this... I had no problem with the interface of course (save for not expecting to have to read instructions outside of the game), but if you were to update it, maybe consider an instructions page or adding clickable buttons? Say, a full restart/grid/quality/mute/zoom row in the close-up view and a little zoom icon in the zoomed out view? Perhaps even make a button/key to toggle the buttons. Either that or copy the instructions text into the game. Other than that, a level editor and Kong API stuff would be nice.
If you want a theme explanation, as far as I can tell the "endurance" is in the fact that you want to make a sustainable city. Or rather, three cities.
 "Idle accelerator"){kind=icon}
 "Cosmos Quest: The Origin"){kind=icon}
 "Crush Crush"){kind=icon}
 "Transport Defender"){kind=icon}
 "Battalion Commander"){kind=icon}
 "Ninja Slash"){kind=icon}
 "Super Duck Punch!"){kind=icon}
 "Beloved"){kind=tracking}
 "Berzerk Ball 2"){kind=icon}
 "Love (new version for Eden contest)"){kind=icon}
 "Space is Key"){kind=icon}
 "Manufactoria"){kind=icon}
 "Great Game 1/5"){kind=icon}
 "Surreality"){kind=icon}
 "Evolution Squared"){kind=icon}
 "The LaCoGeSSta Research"){kind=icon}
 "Age of Information"){kind=icon}
 "Super Crazy Guitar Maniac Deluxe 3"){kind=icon}
 "manta-bomber"){kind=icon}
 "colourPod"){kind=icon}
Ty I ll check, already found some bugs in the WebGL version that desktop version dsnt have, I think its due the conversion from c# to js.