Herzog Zwei

Herzog Zwei (German for 'Duke Two') is a real-time strategy game developed by Technosoft and published by Sega for the Mega Drive/Genesis. An early real-time strategy game, it predates the genre-popularizing Dune II. It was released first in Japan in 1989 and worldwide in 1990. It is the sequel to Herzog, which was available on the Japanese MSX and PC-8801 personal computers.

Herzog Zwei combines the arcade-style play of Technosoft's own Thunder Force series with a simple, easy-to-grasp level of strategy. It has been cited as an inspiration to the developers of Warcraft, StarCraft, Dune II, and Command & Conquer and is also considered a precursor to the MOBA genre.

Gameplay
The player directly pilots a flying, transforming mech, similar to the variable fighter depicted in Macross. It is a multi-role vehicle suited for utility and combat. Through the mech, the player purchases surface combat units, airlifts them across the battlefield, and issues them orders. These command activities can only be performed through the mech. Vehicles follow their assigned orders (patrol, garrison, capture base) until they either run out of fuel or are destroyed. Tactical re-deployment (mission reassignment, vehicle repair) involves a great deal of micromanagement, due to the required involvement of the mech.

Both the player's ground forces and the mech have finite fuel and ammunition. A prolonged engagement requires considerable micromanagement, as vehicles will not auto-repair, and the fragile combat-supply vehicles have a limited radius of service.

With a total of eight different types of land units to purchase, the player can determine the composition of his army. Each combat vehicle type represents a tradeoff between speed, anti-air, ground-attack, and cost. Units are assigned mission orders from a menu selection: "fight from a fixed position", "patrol this area", "fight in fixed radius" and "go to/attack/occupy intermediate base". New orders can only be issued during the airlift, and every time a unit's mission orders are reassigned, a cost is incurred.

In addition to the player's main base, there are nine permanent outposts scattered across the battlefield. These indestructible buildings are the only production resources on the battlefield. Once under a player's control, an outpost generates additional revenue (for purchase of units) and serves as a remote base of operations (repair/refuel, pick up delivery of purchased unit). A key strategy is to capture as many outposts as possible or deny enemy use through nuisance actions.

Herzog Zwei supports both single-player mode against the AI, as well as a two-player multiplayer mode. In single-player, the entire screen is devoted to the human-player's field of view. The game partially offsets the AI's inherent weakness by increasing the armor and offensive damage of computer player side with each advancing level.