Coins are the unit of currency in Kingdom, with which the Monarch can purchase, build, upgrade, and acquire many things.
Coins are stored in the pouch.
There are many ways to obtain coins. The most fundamental and continuous ways to make money is through farming and hunting. Meanwhile, logging and searching for treasure chests in ruins in the wilderness are noteworthy one-time methods to get coins.
Most actions in the game require coins to do. Coins are used to recruit vagrants, purchase tools, build & upgrade various structures around the kingdom, and to order various tasks be done (such as logging or ordering an assault on a portal). In New Lands and Two Crowns, coins are needed to repair the boat and leave the island.
Other than for spending, coins can also be used as a buffer against direct attacks from enemies which would otherwise cause the Monarch to lose the crown. Coins can also be given to knights to add extra protection and health to resist enemy attacks as well. Furthermore, coins can be dropped behind fleeing townsfolk to protect them from attacking greedlings — They prefer whatever is closer: stealing dropped coins or attacking people.
Coins left on the ground despawn with time. They also tend to disappear because of greedlings stealing them or some subjects picking them to deliver them to the Monarch when the mount walks by them. Each type of subject can hold a different amount of extra coins.
A few achievements are related to the coins.
Overflowing the coin pouch by Day VI grants:
- "By Day Six I Was Rich", in Kingdom: Classic and New Lands; and
- "On the Sixth Day", in Two Crowns.
Only dropping a first coin on Day VIII grants:
- "On the Eighth Day I Fumbled", in Classic and New Lands.