Heroes of Might and Magic is a series of video games originally created and developed by Jon Van Caneghem through New World Computing. As part of the Might and Magic franchise, the series changed ownership when NWC was acquired by 3DO and again when 3DO closed down and sold the rights to Ubisoft. The games feature turn-based, fantasy-themed conflicts in which players control armies of mythical creatures. The series began in 1995 with the release of the first title. A sixth installment, Might and Magic: Heroes VI, was released on October 13, 2011.

The series is directed primarily at the DOS and Windows platforms, with sporadic support for Mac OS over the years. New World Computing closed after the production of Heroes of Might and Magic IV, and since then the rights to the franchise have been owned by Ubisoft. Nival Interactive developed the first game in the series since the changeover, Heroes of Might and Magic V, while Black Hole Entertainment is developing its sequel. Heroes III was ported to Linux.GameTap has carried the first four games in the series since 2006.Remakes have appeared on the Game Boy Color.

The Heroes series is within the genre of turn-based strategy. The titular heroes are player characters who can recruit armies, move around the map, capture resources, and engage in combat. The heroes also incorporate some role-playing game elements; they possess a set of statistics that confer bonuses to an army, artifacts that enhance their powers, and knowledge of magical spells that can be used to attack enemies or produce strategic benefits. Also, heroes gain experience levels from battle, such that veteran heroes are significantly more powerful than inexperienced ones. Experienced heroes may persist through a campaign, but generally do not carry over between scenarios.

On a typical map, players begin a game with one town of a chosen alignment. The number of different alignments varies throughout the series, with the lowest count of four appearing initially in Heroes I and peaking at nine in the Heroes III expansion Armageddon's Blade. Each town alignment hosts a unique selection of creatures from which the player can build an army. Town alignment also determines other unique traits such as native hero classes, special bonuses or abilities, and leanings toward certain skills or kinds of magic.

Towns play a central role in the games since they are the primary source of income and new recruits. A typical objective in each game is to capture all enemy towns. Maps may also start with neutral towns, which do not send out heroes but may still be captured by any player. It is therefore possible, and common, to have more towns than players on a map. When captured, a town retains its alignment type, allowing the new owner to create a mixed army. A player or team is eliminated when no towns or heroes are left under their control. Barring any special conditions, the last player or team remaining is the victor.

A side objective commonly appearing in the series is the acquisition of a powerful object called the "ultimate artifact," (Heroes I and II), grail (III and IV) or Tear of Asha (V), buried under a random tile on the map. As heroes visit special locations called obelisks, pieces are removed from a jigsaw puzzle-like map, gradually revealing its location to the player. Once found, it confers immense bonuses to the player capable of breaking a stalemate: the grail can be taken back to a town and used to build a special structure, while the ultimate artifact provides the bonuses directly through possession.

Time and resource model

Each turn (consisting of all players' moves) is represented as a single day, and days are organized into cycles of weeks and months (measured as four weeks). The primary resource is gold, which is generated by towns on a daily basis. Gold alone is sufficient for obtaining basic buildings and most creatures. As construction progresses, increasing amounts of secondary resources such as wood, ore, gems, crystals, sulfur, and mercury are required. These resources, as well as gold, are produced at mines and other secondary structures, which are located on the map and require heroes to capture them. As with towns, mines can also be captured by enemy heroes, presenting an additional avenue for conflict.

At the start of each week (each day in Heroes IV), creature dwellings produce new recruits, and in most cases neutral armies will increase in size (by default; can be turned off if desired). In some of the games, the start of a new month causes neutral armies to spawn all over the map, providing fresh challenges and opportunities.

Combat

Whenever a player engages in battle, the game changes from the adventure map display to a combat screen, which is based on either a hexagonal or square grid. In this mode, the game mimics the turn-based tactics genre, as the engaged armies must carry through the battle without the opportunity to reinforce or gracefully retreat. With few exceptions, combat must end with the losing army deserting, being destroyed, or paying a heavy price in gold to surrender. Surrendering allows the player to keep the remaining units intact.

Creatures in an army are represented by unit stacks, each of which consists of a single type of creature, in any quantity. A limited number of stacks are available to each army, varying by game. Players generally maneuver their stacks attempting to achieve the most favorable rate of attrition for themselves. The games also have an automatic combat option that allows the computer to make tactical choices for a player. Heroes participate in battle as well: passively by granting bonuses to their army, and actively by engaging in combat and casting spells. In most of the games, heroes do not act as units, and cannot be harmed. However, in Heroes IV they do act as regular units and can be "killed"; these dead heroes are transferred to the nearest town's dungeon where they can be freed if their team captures the town.

Combat is affected by several random factors. In addition to simulating dice rolls to determine damage, a variety of influences including hero abilities and special bonuses determine a unit's luck and morale ratings, which affect the likelihood of those units triggering a bonus during combat. A unit that triggers good luck deals more (or receives less) damage, and a unit that triggers high morale receives an extra turn. In some other games, luck and morale can also be negative, with opposite corresponding effects. Luck and morale can be improved by hero abilities, artifacts, and spells. Morale may suffer with overwhelming odds in combat or by mixing incompatible unit types (e.g. Chaos with Order.)

History of changes

Knowledge allows heroes to cast more spells, either through a spell memorization (HoMM I) or spell point (II-V) system.

Heroes II introduced secondary skills. Heroes can learn a limited variety of secondary skills with several levels of proficiency. Secondary skills give specific, miscellaneous bonuses to heroes and their armies. For example, skill in logistics increases the distance a hero's army can travel, while skill in leadership gives their army a morale bonus.

Beginning with Heroes II, some creatures were able to be upgraded. By Heroes III, every creature (excluding those not found in any castle) was able to be upgraded.

Heroes III also introduced a new artifact platform; rather than having 14 spaces for any artifact, the player instead has a much larger backpack, but can only use a limited number. For example, only one headpiece can be used at a time, as well as only one pair of boots, etc.

Replay value

Games in the series often include a map editor and/or random map generator. Several fansites collect and rate user-generated maps.