The large meteor wiped out Dusty Depot, leaving behind a large crater.^[5] Inside, a mysterious pod was found that contained a character known as "The Visitor", who then raided the villain base to steal a prop rocket. Using meteor remnants from the crater, the Visitor turned the prop into a real rocket, which launched and created a massive interdimensional rift above the Island.^[6]

Near the end of the season, the massive rift closed, but not before transporting a large purple Cube to the Island. This Cube, nicknamed "Kevin" by the players, rolled around the Island before sinking into Loot Lake, leaving behind a trail of corruption.

In a live event, the overloaded Cube exploded, transporting everyone to a realm known as the "In-Between". A rift-shaped Butterfly appeared, which returned the players back onto the Island. Loot Lake had been mostly restored to normal, with the exception of the appearance of tiny landmasses.^[10] Before the end of the season, a large iceberg was spotted on the southwestern corner of the Island.

At the end of the season, the Ice King's prisoner escapes and creates a large volcano on the northeast corner of the map, reclaiming his powers of the Fire King. The volcano's appearance causes earthquakes that rocked the Island, creating fissures in the ground.^[11]

In the "Unvaulting" live event, players entered the Vault to vote on one of six items to be reintroduced into the game. Inside, the Vault houses the Zero Point, an orb of pure energy created by the Big Bang, serving as the core of all of reality. After the Drum Gun won the vote, the volcano erupted, scattering debris in the air which would ultimately destroy Tilted Towers and Retail Row, and cause damage to the iceberg.^[12]

In a live event, Mecha activated and engaged the Devourer, but ended up getting overpowered. Severely damaged, Mecha was forced to pull the Zero Point out of the Vault to regain power before using a sword hidden in Neo Tilted to kill the Devourer. Mecha flew off into space, leaving the Devourer's corpse and a severely damaged Zero Point behind, which exploded at the end of the season.^[14]

In "The End" finale event, the Scientist launched a rocket from Dusty Depot, with each rift zone opening to allow the remaining six rockets to travel through. The seven rockets unfroze the meteor and took it through another rift, positioning it directly above the Zero Point. The meteor descended and struck the Zero Point, creating a black hole that consumed the Island, leaving the entire game unplayable.^[16] Following the event, players could enter the Konami code to play a minigame.^[17]

In a live event, Emperor Palpatine broadcast a message across the Island as the Millennium Falcon flew in the skies above, promising revenge for the Sith.^[d]

Under the Agency's headquarters at the center of the Island, their leader Midas had been constructing a device in an attempt to destroy the Storm and break the Loop. In a live event at the end of the season, this plan went awry, and instead a large wall of water surrounded the Island. As this was happening, players drifted in and out of a mysterious office setting and briefly interacted with a blonde-haired agent.

In the "The Devourer of Worlds" live event, Iron Man armed numerous Battle Buses with gamma bombs and had the players lure Galactus into inhaling them all, causing an explosion that sends him back to his home reality. However, the Zero Point had been pulled out of the center of the Island by Galactus and was severely damaged, leading to the events of the following season.^[24][g]

Near the end of the season, the Zero Point started to gradually destabilize, becoming visibly unstable with pulsating effects appearing around it.

A "reality wave" created by the Zero Point replaced the surrounding area's modern technology with primitive tools, forming a "Primal" biome and sending the Island to a primal age. Furthermore, wild animals were added, which roam throughout the island. Near the end of the season, the Spire ended up attracting extraterrestrial attention, and UFOs began to appear on the Island. Aliens made contact with the Loopers in the form of puzzles, which revealed their identity: "The Last Reality".

In the "Operation: Sky Fire" live event, IO military leader Doctor Slone led the Loopers to plant bombs on the mothership in hopes of ending the invasion. However, the mothership had been carrying several Cubes (similar to Kevin in Chapter 1: Season 6), and they were controlled by the Last Reality. Slone abandoned the Loopers after the bombs were successfully armed and left them to die, but they survived by "rebooting" one of the Cubes. The mothership exploded, releasing the Cubes onto the Island.^[28]

In "The End" finale event, the Cube Queen opened a portal to the Last Reality, allowing numerous UFOs and motherships to rain destruction down on the Island. Jones, who was held captive by Slone following the Zero Crisis Finale, was freed by the Foundation (revealed to be portrayed by Dwayne Johnson), having escaped Gotham City. The Scientist and the Visitor evacuated the Loopers to an underground chamber, while the Foundation manipulated IO technology to rotate the Island, revealing another Island on the flipside. As the landmass was being flipped, the Last Reality's weakness to water forced them to retreat. The underground chamber flooded, washing the Loopers away into the ocean.^[30]

Near the end of the season, the IO began drilling to the Flipside, causing earthquakes across the Island. They established a base in the mountains and expanded their drilling in preparation with war with the Seven.

After the Seven retook most of the Island, the IO drained Loot Lake and built the Collider in its place, aiming to destroy the Island and take the Zero Point. In response, the Seven located Mecha Team Leader on an icy moon, which had been piloted by the Paradigm. In tie-in comics, the Paradigm had conspired with the IO to build Mecha, and she explained that without the IO's involvement, they would have built the Collider to contain the Devourer. After defeating the Devourer, Mecha crashed into the moon, knocking the Paradigm out until the Seven located her.

In the "Collision" live event, the Seven rebuilt Mecha to launch a final attack on the IO and the Collider. As Mecha prepared to destroy the Collider, it fell into a large underground pit, revealing it was powered by an overclocked Zero Point, which begins phasing between different realities. Slone ambushed Jones, the Foundation, and the Loopers in a tank, but a weakened Mecha destroyed it, presumably killing Slone. The Zero Point then hones in on Geno's new location, leading Jones and the Foundation to jump into it to pursue him. The Loopers succeeded in destroying the Collider, and were evacuated by Mecha.

Tie-in comics set after Collision saw Jones and the Foundation finding Geno and a member of the Seven, The Imagined, disintegrating as a result of coming into contact with the unfocused Zero Point, causing their matter to be scattered across realities. Before disappearing, Geno warned them about the dangers the Island may face without the IO's control. Although thought to have died, Geno was able to reclaim his body in another reality.

Throughout the season, the Zero Point began summoning artifacts to the Island, which served as distress signals as its newfound freedom exposed it to new threats. At the end of the season, the Foundation and the Imagined's sister, the Order, mysteriously went missing.

The Chrome slowly infected the Island as the season progressed, overtaking numerous locations. In the "Fracture" finale event, the Herald fused with the Reality Tree, destroying all of Reality Zero but leaving the Zero Point intact. For 40 minutes, the Loopers assisted the Paradigm to initiate Zero Fusion, bringing in landmass from other realities to form a new one-sided Island around the Zero Point. The Paradigm seemingly sacrificed herself to complete the process.

A "Shapeless Man" (implied to be Geno) had been haunting Stellan, goading him to construct the Rift Gate to help him return to the Island and establish a world of "perfect order". Meanwhile, AMIE and the Looper decode a message seemingly from the Last Reality, suggesting that the Seven were held captive and are in grave danger. As a result, AMIE tampered with the Rift Gate by altering its coordinates to where the message came from, and traveled through it to find the Seven. This destabilized and destroyed the Rift Gate, and opens a red rift in the sky instead. Following this, the Shapeless Man stopped haunting Stellan.

A saboteur had corrupted the Peace Syndicate's intel while also orchestrating tensions between it and other syndicates, nearly sparking a war between them. The Looper worked with the Peace Syndicate to cool tensions between the other syndicates and united them against the saboteur, who was later revealed to be working for the Last Reality. An inter-syndicate war was successfully averted, although fissures began to appear around the Island at the end of the season, with vines sprouting from them.

Atop one of the temples sat a ruined telescope known as the Apparatus, which Slone and other explorers repaired. Slone's continued studies of the ruins led her to a prophecy called the "Eclipse", which although astrologically impossible, was fated to occur. The Zero Point could be found nearby the Apparatus, depleted of its energy and encased in stone. Optimus Prime made a radio announcement to warn the Island of the impending dangers they would face without the power of the Zero Point.

Slone and her associate Nolan Chance, with the help of the Looper, assembled a team to steal Kado's time machine, which he had set to "July 12th, 2018".^[h] The Eclipse began and Kado turned into a revenant vampire, but Slone, Nolan, the returning Jones, and their crew successfully completed their heist. While running tests on the time machine, objects from Chapter 1 were brought into the present, including the Durrr-Burger head. Although Kado's fate was left ambiguous, Jones prepared to go back in time.

Jones traveled back in time to the Chapter 1 Island, which had a few differences as Jones' time jump had slightly altered history. Each week, the map updated to reflect the seasonal changes in Chapter 1, starting with Season 5 and then Season 6, 7/8, and 9/X. Some locations from Chapter 1 were however omitted for Season OG, such as Dusty Depot.^[35] Slone recorded multiple audio logs that she sent back in time to Jones, instructing him to perform an "extraction" that involved salvaging the Zero Point and all of reality, and she bade Jones goodbye, as his actions would change the future. The Zero Point emerged from Loot Lake, and the Time Machine was strapped to the rocket, which began to launch.

In "The Big Bang" finale event, events played out like Chapter 1's "The End" event, although the rocket— and later the meteor— started to glitch out due to the effects of the Time Machine. The glitching meteor struck the Zero Point and the island collapsed in on itself, but instead of a black hole forming, the Big Bang occurred, resulting in old and new realities beginning to materialize. Among these new realities were Lego Fortnite, Rocket Racing, and Fortnite Festival, which were released in the opening dates of Chapter 5. Fall Guys x Fortnite was added in July 2024. An OG-inspired "Reload" mode was added in July 2024, while a standalone OG mode was added in December 2024, expanding on Season OG.^[36]

Valeria planned to use Peely to interrogate Jones about an ancient chest, but it was foiled as Jones was able to rescue Peely from the Society. Valeria continued her search, which led to a massive arm carrying the chest to emerge from the ground. When the chest was opened by the players, a tornado of souls came out of it, leading Valeria to flee and leave the rest of the Society members behind.

Throughout the season, the player recruited Aphrodite, Artemis and Medusa to stand against Zeus, allowing Jones and Hope to defeat the weakened Zeus. The statue on Mount Olympus then came to life and fired a lightning bolt at the chest (revealed to be Pandora's box), producing a mysterious spark of energy that attracted a sandstorm that began to approach the Island.

As Hope began to experience visions of the future due to the Pandora Gems the players stole from Megalo Don, the Oracle explained that Hope and Pandora's box are intertwined in fate (revealing her as Elpis from Greek mythology), but the Wanderer's interference had irreversibly altered their destinies. Sensing doom, Magneto planted Stark-made Rift Beacons across the Island to call for reinforcements to confront the Wanderer. Simultaneously, Megalo Don constructed a pipeline to power his Leviathan warship, but the Wanderer betrayed Megalo Don by sabotaging the pipeline, causing it to explode. Pandora's box was revealed under the pipeline rubble, and the Wanderer then took the box's powers for himself.

Doom retreated to assemble a new set of armor in order to contain the power of Pandora's box as Hope and Shuri began to reconfigure the Rift Beacons in order to send Doom away to another reality. After more Rift Beacons were planted and Mysterio and Emma Frost were defeated, an enlarged and empowered Doom returned to the Island. Led by Hope, the players joined Jones, Peely, and other Marvel heroes in a battle to entrap Doom into being rifted away.^[38] A Rift Butterfly later appeared and temporarily merged the Island with New York City, leading to a live concert headlined by Snoop Dogg and Ice Spice in Times Square. After-which, players were blinded by a light from the Rift Butterfly, teasing the next season.

Hidden audio logs revealed Hope had been unsuccessfully reaching out to Valeria, telling her that she had disbanded the Underground as she was leaving the Chapter 5 Island to investigate her link with Pandora's box. All four rappers headlined a final concert similar to the Travis Scott event to conclude the season and chapter. Afterwards, the Rift Butterfly transported the players, Jones and Hope through a wormhole to a Japan-inspired Island. A mysterious artifact followed them out of the wormhole and fell towards the Island's surface.

Jade ended up trapped in the demons' Spirit Realm after getting herself cursed by the demons, which was accidentally worsened by a mask made by her brother Daigo. Hope identified the artifact as part of the Zero Point, which was in the possession of a dark entity in the Spirit Realm. Kendo forged magical blades using artifact fragments and gave them to the Night Rose demon, who in turn gave them to Daigo. To save Jade, Daigo defeated the demon leader Shogun X in a duel with the blades, leaving a pool of gold behind. Jade informed the players that the gold would cause chaos on the Island.