: Occasionally, the developers release gift codes that provide free money and gold for a limited time.

: Visit other players' cities to put out fires for free gold. Don't forget to keep your airport running, as every landing plane provides a cash bonus.

: Open Diamond Chests whenever possible. They have a 10% chance of yielding a Crane , an essential tool that usually requires real money to acquire. 🚀 Pro Tips for Fast Growth

: Participate in "Crook Events" to net large amounts of keys and building upgrades.

: You can turn silver keys into gold keys by queuing low-cost buildings like kiosks or water parks before ending your day.