Coins are collected from your habitats. They usually some time to fill up, depending on the level of the monsters contained inside. Because habitats no longer produce coins when they are full, collect from them regularly. When you send your Mugwai to work, select the five minute jobs if you have the time. Those jobs are the best choices in terms of coins per unit of produced food or stones. However when you have to leave the game unattended it is better to take the most expensive jobs to maximize the items produced per time period.
