Heroes of Might and Magic IV is a turn-based strategy game developed by Gus Smedstad through New World Computing and published by the 3DO Company for Microsoft Windows-based personal computers in 2002. A Macintosh port was subsequently developed by Contraband Entertainment and released by the 3DO Company. The fourth installment of the popular Heroes of Might and Magic franchise, it is the sequel to Heroes of Might and Magic III, and was the last to be developed by New World Computing. Gameplay Heroes of Might and Magic IV introduced a number of major changes to the series. Heroes Unlike previous games, where they had little active role in combat, heroes became present on the battlefield with their troops. They can attack, and be attacked. If a hero is killed in combat he/she must be brought to a friendly town to be revived. It is possible to have armies with more than one hero, or with no heroes at all, although armies without a hero are incapable of performing certain tasks, such as capturing enemy towns or structures. The skill system also underwent a significant overhaul, and all Heroes of a given class start out with the same skills. The player has significantly more control over the development of the Hero than in previous games in the series, and Heroes "evolve" into over 40 different specialized classes. A Hero can select up to five of the nine available primary skills, and each primary skill makes available three secondary skills. Each of these 36 skills have five levels of progression as opposed to the three levels in the previous games. Combat Both the adventure and combat maps were converted to a fixed-view isometric 3D display. The traditional hexagon-based battle grid was converted into a much higher-resolution square-based grid, making it easier to feature units of different sizes. Non-hero spellcasting units were given proper spell selections. Retaliation was allowed simultaneously with the attack, and ranged units were given the capability to retaliate against ranged attacks. Projectile attacks and spells now required direct line of sight to the target. World map Each individual troop unit was given its own movement allowance on the adventure map, with units possessing the ability to split off independently of the main army; however, the troops can no longer be "shuttled" from hero to hero to move an army large distances in a single turn. Logistics were restricted by