A pirate, a pharaoh and an apache are here to help you collecting coins and crystals.
This DLC contains the following units:
Pirate (Ice)
Pharaoh (Rocks)
Apache (Volcano)
The Pirate and Pharaoh will help you to collect gold.
The Apache also collects crystals.
Note: The game can be fully finished without this DLCs but it's a nice way to support me, the solo developer.