Battle Realms' gameplay is like many other real-time strategy games. There are several factions which all have various types of available structures and units to produce. Unlike other real-time strategy games though, the basic worker units, which are used for resource gathering and construction, also act as the base unit to be upgraded into military units. Thus, military buildings in Battle Realms are used for transforming and upgrading units rather than producing them directly. (wikipedia.org)