They come in several different types and elements. The list below shows each Resource's element and maximum level.
There is no limit the number of Resource Buildings you can place in a District, so you could have nine Resource buildings in a single District.
These Buildings are "High Producers" but they have a "Low Cap". This means that they will be full every two hours. In order to gain the most benefit from Fire Resource Buildings, you should log into the game every two hours to collect your Gold - assuming that someone hasn't already taken it via a Rival Attack.
- Down-and-Out Burger (1 - 7)
- Money Maker (1 - 10)
- The Wistful Windmill (11 - 17)
- Hysteria Heights (11 - 20)
- Vacuum Sealed (?? - )
- Growth Facility (31 - 40)
- Institute of Irritating Sounds (? - ?)
Fire Resources are very popular with active players, as they quickly replace any Gold taken from a Rival Attack. However, if you only log into the game two or three times a day, you will not benefit from having Fire Buildings in your Districts.
These Buildings are "Balanced Producers" and have a "Balanced Cap". This means that they produce gold more slowly than Fire Resource Buildings, but they will will also be able to store more Gold while you are offline.
Poison Resource Buildings are a good "middle ground" for players that cannot (or don't want to) access the game every two hours, every day.
These Resource Buildings are "Low Producers", which means that they accumulate gold very slowly (or at least, slower than Fire or Poison Resource Buildings do). However, they have a "High Cap", which means that they can store much more Gold than the aforementioned Resource Buildings.
Ice Resource Buildings are good for players that only wish to log into the game once or twice a day.