Kohan: Immortal Sovereigns (KIS) is the first game of the real-time strategy series Kohan, developed by TimeGate Studios. It was published for Windows by Strategy First, and ported to Linux by Loki Software, both in 2001. With a high fantasy setting, the game follows immortal beings named Kohan. It features a lengthy single-player campaign and skirmish maps playable in multiplayer or against the AI. The gameplay focuses on controlling companies instead of individual soldiers, a mechanic praised by critics for eliminating micromanagement.
The KIS economy has five resources, of which gold, as the only resource which can be stockpiled, is the most important. The four secondary resources, stone, wood, iron, and mana, are used to support the military; if their production is insufficient, gold income will be decreased to accommodate. Resources are produced in settlements or in mines; mines can only be placed in predetermined locations. Settlements have a number of slots to be occupied by one of eight components; each produces a particular resource, or gives another benefit to the settlement. Settlements also determine the support limit, which represents the number of companies the player can support.
The company creation screen of an undeveloped town. The five categories of units can be clearly seen; grey units are currently unavailable for recruitment.
The main military unit in KIS is the company. Each company is led by a Captain, has four front line units, and can have up to two different support units. The units available for company creation depend on the components in the settlement where the company is being recruited. For each company, a recruitment cost must be paid in gold; furthermore, each unit in the company requires a certain amount of secondary resources to support itself. Companies are defined by experience, morale and formation. A company's support units and Kohan can provide additional modifiers, affecting attack strength, move speed, defense and other. Once a company engages in combat, each unit will fight individually. As long as a single unit survives combat, the company can eventually resupply to full strength.
Units in KIS are divided into six categories: infantry, cavalry, archer, specialty, support, and Hero elements. The first four categories can be both front line and support troops, while the fifth may only occupy support unit slots. The sixth category represents the Kohan, who are the most powerful units, and can only be put in the Captain slot. Each Kohan can provide several modifiers and cast several spells. Kohan have an experience stat separate from the companies' experience, which affect their abilities. If a Kohan dies, he may be resurrected, but will lose all experience. If no Kohan is available, a Captain without any special abilities will lead the company. Kohan can be detached from and attached to companies at any time if the company is in supply.
A significant element in KIS are the three zones: Zone of Control (ZoC), Zone of Supply (ZoS) and Zone of Population (ZoP). Each company has a ZoC, which is based on formation. If a company's ZoC overlaps with an enemy company's ZoC, they will engage in combat. The ZoS is the area in which companies can be healed; it is provided by settlements, unless the settlement is under siege, and is based on a settlement's size and components. If a company's ZoC overlaps with a friendly ZoS, the company is considered "in supply" and will heal when out of combat. Each settlement also has a ZoP, representing the lands already inhabited. New settlements must be built outside the ZoP.