This is a really nice looking game!
Everything is colorful and animated, it feels very lively and satisfaying :)
At first I did not really know what to build in priority, but I did find out what resources each building produce by observing the icons poping up!
The disaster mechanic is interesting, but it is not much of a challenge in its current state. It is very easy to always keep 1-2 drain and lightning rod, and after that, disasters becomes very weak.
The only thing I feel the game lacks is sound, it would really help feeling the progression and the impact of the disasters.