I was deeply hooked on this from minute 1. The core loop is really satisfying, and I really liked how the mining aspect fed into the city building aspect. I do have a few issues with it, the biggest one being the alert system. The game tells you about major events happening, like an enemy attacking or an imminent mine collapse, but it doesn't give you any way of knowing where those things are happening. Later in the game when you're juggling 3 mine levels at once it becomes really annoying to have to find those things. Similarly, I really liked how there was a strategy to the city building where certain buildings could be removed and replaced because higher tier citizens didn't need them, but it's basically impossible to find those buildings once the city gets to a certain density. A simple list of buildings with a "locate" button would have done wonders. Apart from that though I really loved this.