Final Fantasy XIV: Heavensward is the first expansion pack to Final Fantasy XIV: A Realm Reborn, a massively multiplayer online role-playing game (MMORPG) developed and published by Square Enix for macOS, PlayStation 3, PlayStation 4, and Windows, then later on PlayStation 5, Xbox Series X/S, and Nintendo Switch 2. It was released on June 23, 2015, nearly two years after the debut of A Realm Reborn. Naoki Yoshida served as director and producer and Nobuo Uematsu, who had not worked on the title since the ill-fated 2010 launch of the original Final Fantasy XIV, returned to collaborate with Masayoshi Soken on the soundtrack. The expansion pack was released as a standalone product for current players, as well as an "all-in-one" bundle containing A Realm Reborn and Heavensward. The latter was the only way to access the OS X version of the game, which premiered on the same day as the expansion pack's launch.

Heavensward focuses on a millennium-long conflict known as the Dragonsong War between the Holy See of Ishgard and the dragon horde of Dravania. Players seek asylum in Ishgard after being falsely accused of murder and become involved in efforts to end the war. These actions uncover an ancient conspiracy concerning the origins of the war. In addition to the new areas, the expansion pack increases the level cap, adds three new character classes and a new playable race, and introduces flying gameplay through the use of airships and other airborne mounts.

Heavensward performed well critically and earned nominations for "Expansion of the Year". By July 2015, the title had reached a cumulative total of five million subscriptions. However, the company suspended sales of the OS X version of the client that same month due to numerous reports of poor technical performance and offered refunds to those who purchased it. OS X sales resumed in February 2016. As with A Realm Reborn, major content patches were scheduled for every three months, though the first one—"As Goes Light, So Goes Darkness"—was delayed to November 10 the same year, to give the development team a break after shipping the expansion.

Gameplay

The gameplay and quest structure of Heavensward largely match that of its base game. As with many massively multiplayer online role-playing game (MMORPGs), players interact with each other in a persistent world that responds to their actions. The biggest change to the combat is an increase of the level cap to level 60, which allows each fighting class to learn new abilities that significantly modify the flow of battle. Three new job classes are introduced as well—the abyssal tank Dark Knight, the gun-toting Machinist, and the star-powered healer Astrologian. These jobs begin at level 30 with their own storylines connected to the new setting, requiring access to the city of Ishgard in order to unlock their questlines.

Heavensward features new areas which are about three times as large as zones in A Realm Reborn. The reason for the size increase is to accommodate flying gameplay. After completing certain quests and attuning to the air currents in an area, players gain the ability to use new flying mounts, such as airships, in that location. Flying allows access to previously unreachable points in the terrain. Airships built by player-run guilds also have the ability to explore floating islands for rare materials, as well as the Diadem—an open world area where players can challenge large monsters for high level gear and spoils.

In addition to new dungeons and raids, Heavensward introduces three new player versus player (PvP) modes. The Feast is an updated four-versus-four arena in the Wolves' Den in which players attempt to defeat other players to collect their medals. The team with the most medals at the end of the match wins. Unlike the Fold of A Realm Reborn, players respawn automatically in this mode and item boxes appear periodically around the arena which provide offensive and defensive advantages to the team that breaks them open. Players who maintain a high rank in the Feast are awarded with unique gear and trophies at the end of a season. An unranked version also exists for new players which features eight-versus-eight combat. The remaining new modes are for 24-player alliances to confront other Grand Companies. Seal Rock (Seize) is a capture the flag-style mode in which players must occupy and defend randomly spawning resource nodes from other teams. The Fields of Glory (Shatter) involves destroying objects around the battlefield for points.

Plot Setting and characters

Heavensward takes place on Hydaelyn, a fictional planet with diverse Earth-like climates, focused on the isolationist Holy See of Ishgard, in the snowy mountains of Coerthas. Ishgard is the northernmost part of the primary gameplay region, Eorzea. The three Eorzean Alliance nations—Gridania, Limsa Lominsa, and Ul'dah—and the Garlean Empire also appear. The Ascians, immortal servants of the dark god Zodiark, continue their machinations. Flight permits players to explore the dragon homeland of Dravania and islands floating above the Abalathia's Spine mountains. In Dravania, the abandoned and ruined Sharlayan colony has become Idyllshire, a free, democratic city founded by goblins.

Heavenswards primary conflict concerns the millennial Dragonsong War between Ishgard and Nidhogg's draconic horde. Ishgardian orthodoxy claims Halone, their goddess, commanded King Thordan build a city in Abalathia's Spine. This angered the great wyrm Nidhogg, who confronted Thordan and his knights twelve. Though he and several knights were slain, Thordan's son Haldrath took up his father's spear, carving out Nidhogg's eye. Nidhogg fled, his eye becoming an Ishgardian relic, granting its volatile power to a line of Azure Dragoons. Nidhogg has since continuously besieged Ishgard and her people. The Ishgardian Archdiocese, currently led by Archbishop Thordan VII, promulgates these claims as holy doctrine.

The unending war makes Ishgard isolationist in both policy and everyday demeanor; they withdrew from the first Eorzean Alliance and ignored the second, preoccupied with the Dragonsong War. It also manifests in their fanatical devotion to Halone and persecution of "heretics"—those who support dragons. Just prior to Heavensward, Nidhogg awakens, calling his brood to active invasion once again. The player's character, the Warrior of Light, befriends Haurchefaunt Greystone of House Fortemps for foiling a heretic plot, as well as Ser Aymeric, Lord Commander of the Temple Knights, after defending against a Dravanian assault. After being betrayed during a coup in Ul'dah, the Warrior seeks asylum from the charge of regicide alongside Alphinaud and Tataru, the only other Scions to safely escape. Nidhogg's roar prompts changes to both factions in the war; Aymeric and Count Edmont of House Fortemps open Ishgard to foreign assistance against the dragons, while Lady Iceheart grows her band of heretics seeking reconciliation. Estinien, the current Azure Dragoon, returns to hunt down Nidhogg.

Story After the bloody banquet in Ul'dah, Haurchefaunt persuades his father, Count Edmont Fortemps, to offer asylum to the remaining Scions. The Warrior assists Edmont's sons, and they encounter Lady Iceheart, who regrets the deaths in her recent assault. Returning to Ishgard, the Warrior finds Alphinaud and Tataru accused of heresy by the Heavens' Ward, Archbishop Thordan VII's honor guard. Requesting trial by combat, Tataru chooses the Warrior as her champion, and they secure victory. Thordan apologizes, and reveals to the Warrior that he intends to double-cross the Ascians.

Raubahn is imprisoned, awaiting execution for the Sultana's poisoning, but the Scions free him. They defeat the Crystal Braves in so doing, but their leader Ilberd escapes. They learn from Lolorito that the Sultana lives: he subverted Adeledji's plot, swapping the poison for a sleep draught. Lolorito gives the antidote to Raubahn, who spares him and aids Nanamo in returning to rule.

Alphinaud, the Warrior and Estinien entreat Iceheart to seek peace with Nidhogg. Iceheart reveals she also has the Echo, which showed her the truth of the war. Born Ysayle, she took the name Iceheart after communing with Saint Shiva, who brokered two centuries of peace between man and dragon through her romance with Nidhogg's brother, Hraesvelgr. Ysayle agrees to cease her extremist methods and help them find Hraesvelgr. After defeating the primal Ravana and slaying Nidhogg's consort, the group finds Hraesvelgr, who reveals the "Shiva" Ysayle communes with is just a primal she created.

Hraesvelgr speaks of Midgardsormr's arrival on the star. Of his seven children, Hraesvelgr, Ratatoskr, and Nidhogg settled in Eorzea. Nidhogg distrusted mortals after ancient Allag slew Bahamut and imprisoned Tiamat. Shiva had Hraesvelgr devour her, so their souls would be linked forever. The ensuing peace ended when King Thordan I and his knights murdered Ratatoskr, consuming her eyes for power. Nidhogg, in his fury, slew King Thordan, swearing vengeance on his descendants. Hraesvelgr rejects peace, judging Nidhogg's cause just. Out of options, Estinien and the Warrior storm Nidhogg's lair, slay him, and take his remaining eye. The Warrior learns that this eye is in fact Hraesvelgr's: Haldrath gouged out both of Nidhogg's eyes, only one of which became the Azure Dragoons' source of power, and Hraesvelgr saved Nidhogg's life by giving him one of his own eyes.

After the Warrior returns Hraesvelgr's eye to him, Ysayle leaves to dissuade her followers, and the Warrior returns to Ishgard to share the truth. However, the Archbishop and church leaders already know, and imprison Aymeric for attempting to reveal it. Lucia and the Temple Knights rescue him. The Warrior and Haurchefaunt try to arrest Thordan, but Haurchefaunt is killed shielding the Warrior from a Heavens' Ward ambush. Swearing vengeance, the Warrior and Alphinaud pursue Thordan, who has left for Azys Lla, an ancient Allagan floating colony. Cid and the Enterprise help defeat the primal Bismarck, who held the key to Azys Lla, but the Ascian Igeyorhm steals it. Blocked by Azys Lla's protection field, the Scions turn back and rescue Y'shtola, trapped in the Lifestream during the escape from Ul'dah. She directs them to her mentor Matoya. With her aid, the group breaches Azys Lla's barrier.

The Garlean Empire's new flagship followed the Warrior of Light in hopes of looting Allagan technology, opening fire on the Enterprise. Ysayle, having acquired Hraesvelgr's aid, intervenes, sacrificing herself so the Enterprise can land on Azys Lla. There lie imprisoned the Warring Triad, a trio of ancient primals, and Tiamat. Thordan intends to absorb the Triad's power and conquer Eorzea. The Warrior converses with Tiamat and Midgardsormr, who restores Hydaelyn's blessing. The Warrior kills Igeyorhm and defeats Lahabrea. Thordan arrives, absorbing Nidhogg's other eye and the weakened Lahabrea, and transforms into the primal King Thordan. Despite their combined power, Thordan and the Heavens' Ward are slain by the Warrior.

Estinien prepares to seal Nidhogg's eyes, but Nidhogg's lingering spirit possesses him, reforming his body and escaping. The Warrior's group returns to Ishgard, where Midgardsormr warns that Nidhogg will return. As Thordan's illegitimate son, Aymeric becomes acting ruler, and Ishgard rejoins the Alliance. In a post-credits scene, the Ascians' losses lead Elidibus to recruit the "Warriors of Darkness".

Dragonsong