What a great little game! Very unique concept - don't think I've seen anything quite like it before...
Some possible improvements:
- It's hard to distinguish the healing tornado from the destructive ones purely on color, maybe something visually different from a tornado for the heal would be easier for the player to understand what to keep out of what to pull into town...
- The challenge is reduced quite a bit by building a new town in the corner - maybe some incentive to spread out buildings to give a bit more of a risk/reward dynamic would be nice...
- I think the pyramid was maybe bugged - I couldn't place one even after gathering enough money...