This is a good concept, and it's executed well, but, I dunno, it just doesn't really give a sense that things are actually happening. You just kinda select upgrades and watch tiny(because the UI breaks if you try to maximize the window) sprites wander around while checking the bars in the upper left now and then to see if you're winning or losing, and then near the end they start getting fat wherever you're not looking. Maybe if there had been time to add more visual assets, like the stations changing when upgraded or little 2-frame animations for when a character interacts with one of them, it'd feel more like you were making changes.