Might & Magic X: Legacy is a 2014 role-playing video game developed by Limbic Entertainment and published by Ubisoft. It is the tenth installment of the Might and Magic series. Instead of being a sequel to Might and Magic IX, the game follows the events of Might & Magic Heroes VI and is set in the world of Ashan. It was released on January 23, 2014, as a downloadable title for Microsoft Windows. An OS X version was released on April 16, 2014.

The game focuses on events occurring in the Agyn Peninsula of Ashan, on the continent of Thallan, following the war created by the archangel Uriel. A coup has occurred in the city of Karthal, and a party of raiders who arrive in the region are drawn into a complex plot in the region that threatens to escalate tensions in the various nations.

Players create a party of four characters, each of whom can belong to one of four different races - Humans, Orcs, Elves, and Dwarves - with each race having two male and female appearances to use. Each race has a choice of three classes to use - a "Might" class, a "Magic" class and a hybrid class of the two - with each class determining what skills a character begins with initially, which can be improved during character creation by allocating skill points to them. While characters can increase in level during a playthrough of the game, unlike previous titles like Might and Magic VI, characters can advance in level without going to a training centre and paying to do so, with each advancement allowing the player to improve the levels of skills known along with increasing one of six new statistics for the game: Might, Magic, Perception, Destiny, Vitality and Spirit.

Like other games, each class has a promotion quest, but only one. In Legacy, completing such a quest confers a benefit to the character for the rest of the game. However, only classes being used in a play-through have access to their promotion quests, as, unlike the previous titles, those belonging to classes not in use cannot be accessed and are therefore unavailable.

The movement system in Legacy reverts to the grid-based system used prior to Might and Magic VI, in which players move around a grid to get around the game world, no matter the location they are in, with time flowing when moving between the grid's squares; the flow of time differs depending on whether they are travelling in a town/dungeon or in the wilderness. However, the game world featured in Might & Magic X is much bigger than that of the world featured in Might and Magic IV, providing more locations to explore as a result. Combat in the game reverts to a turn based system upon seeing an enemy, rather than real-time, with the party capable of hitting a hostile only if they are in line-of-sight before them (i.e. in the grid space in front of them). Enemies cannot be hit diagonally but can be hit at range before they move in close to the party's position, which can influence how they move around to do so, while the size of an enemy unit determines how many can fit into a single grid space. While movement is permitted during combat, it can only be done so long as there is not an enemy in an adjacent space to the party; when they do, the party cannot move until all spaces around them are clear. Certain objects found in the game world can assist in battles by conferring a temporary benefit for a short period.

The game utilizes the same skill system as previous titles, since it debuted in Might and Magic VI and was then later improved upon in Might and Magic VII. Skills are divided in the game by type - Weapon, Armour, Magic and Miscellaneous - while a character's class determines the level-cap of expertise a skill can go to, and thus how high a rank it can be, in a similar manner to that of For Blood and Honor; while minor skills can go no further than Expert, secondary skills can improve up to Master, and primary skills can go as high as Grandmaster, thus a character in one class may be able to use bows at the Master level but a character in another class may not advance any further than an Expert level. As with previous titles, higher levels of expertise require a character to reach a certain rank and then find a teacher to train them higher, however they cannot progress further in rank beyond the rank-cap of their level of expertise until they have received training; if a character reaches Expert level for a skill that can later be a Master of, they must first be trained as an Expert before they can allocate more points to that skill.

While the follower system of previous games returns, it reverts to the original set-up prior to Might and Magic IX, in that followers confer benefits to the party, but do not fight for them. Only two followers can be with the party at any time, with each follower bestowing a benefit to the party for the duration with them (i.e. improving their combat skills), while taking a small fee when hired along with a percentage of the gold whilst with the party. Some followers are associated to specific quests, and are thus unable to leave until their associated quest is completed.

One of the biggest changes in Might & Magic X comes from the setting of the game. Due to it being set in Ashan, the science fiction elements that have been the basis behind some of the storylines in previous games of the series are no longer included, yet references to previous titles are present in the game world for long-time fans (such as the name of the first town visited). Another change includes the use of a shared inventory space for the party, rather than characters each having an individual one like in previous titles. Legacy also saw a change in the way spells are learned; characters must now visit a library to learn a new spell, and can only acquire a new one depending on their level of magic skill expertise in any of the following schools of magic their class has access to: Fire, Water, Earth, Air, Light, Dark, Prime.