As someone who’s played Arknights daily since its global launch and written dozens of deep dives into its messy, layered lore, I lost my mind when the first official teases for the Arknights Endfield prequel dropped back in 2022. A lot of casual players still write it off as just another open-world spinoff with no ties to the tower defense game they love, but that couldn’t be further from the truth. Hypergryph has been planting hints about this era of Terra’s history for years, hiding easter eggs in event stages, operator files, and even minor loading screen text. This guide breaks down every confirmed detail we have about the prequel right now, plus well-researched theories that are rooted in existing lore, not random fan speculation.
What Is the Arknights Endfield Prequel, and When Does It Take Place?
For anyone who hasn’t kept up with developer updates, the Arknights Endfield prequel is an upcoming open-world action RPG set in the same universe as the original tower defense title. Unlike most spinoffs that take place around the same timeline as the main game, this entry jumps far back into Terra’s past to explore an era most players only know from fragmented lore notes. Its confirmed timeline placement is 1000 years prior to the Chernobog incident from the original Arknights main story, long before nations like Rhodes Island, Ursus, or Lungmen even existed.
I went through every second of the first official trailer frame by frame when it dropped, and the first thing I noticed was how much more advanced the technology looks compared to what we see in modern Terra. The prequel is set during the so-called “Golden Age of Originium” when humans had mastered the substance as a clean energy source, before it became volatile and linked to the Oripathy pandemic. Most of the story takes place on a previously unexplored frontier region of Terra, where the Endfield Corporation is leading expeditions to mine Originium and study ancient ruins.
You don’t need to have played the original Arknights to understand the prequel’s core story, but long-time fans will catch dozens of small references that tie the two games together. The development team has stated that the prequel’s story will be accessible for new players first, with deeper lore Easter eggs included as a bonus for long-time fans.
Key Lore Connections Between the Prequel and Original Arknights
Hypergryph hasn’t revealed all the links between the two games yet, but we already have a solid list of confirmed shared lore elements that tie the prequel directly to the original Arknights timeline. The Endfield Corporation, the faction players work for in the new game, is the predecessor to many of the tech and mining companies that operate in original Arknights. Its logo appears as a hidden Easter egg on ancient relics in at least six different original Arknights events, including Near Light and Stultifera Navis.
Some of the most notable confirmed lore overlaps include:
Another confirmed link is the presence of “Ancient Tech” that players can interact with in the prequel. This is the same type of lost technology that Rhodes Island researchers study in the original game, and the prequel will explain exactly how this technology was lost during the cataclysm that ended the Golden Age. I was surprised to learn that the “originium shards” we collect in the original tower defense game are actually fragments of pre-cataclysm tech from this exact era.
Playable Characters in the Prequel: What We Know So Far
Only a handful of playable characters have been officially revealed for the prequel so far, but every new reveal comes with small lore hints that tie back to the original game. The main protagonist is the Endfield Administrator, a character with a unique ability to interface with ancient tech that no other living character in the prequel timeline has. Unlike the Doctor from the original Arknights, the Administrator has a fixed, canon backstory that will be revealed over the course of the game.
Many playable characters in the prequel belong to ancient racial lines that are nearly extinct by the time of original Arknights. For example, one revealed character is a pure-blooded ancient Sankta with wings that can physically manifest, a trait that only appears very rarely in modern Sankta characters like Exusiai. Other revealed characters include a Sarkaz warrior with no visible Originium infection, a detail that makes perfect sense given Oripathy is not yet a widespread pandemic in this timeline.
Don’t expect to see any familiar operators from the original Arknights game here, even as Easter eggs. The 1000 year time gap is far too large for any mortal characters to appear in both timelines, though you will find references to the ancestors of popular operators in character dialogues and side quests. The development team has already confirmed there are no plans to add original Arknights operators as playable characters in the prequel, though they have hinted at small cameos from immortal characters like Kal’tsit.
Fan Theories About the Prequel That Make Sense (And Ones That Don’t)
If you’ve spent any time on Arknights fan forums lately, you’ve probably seen hundreds of wild theories about what the prequel will cover. Some are surprisingly well-supported by existing lore clues, while others are straight-up wishful thinking that has no basis in official material. For example, the theory that the prequel will show the exact cataclysm that destroyed the ancient golden age of Terra and turned Originium into the volatile, disease-causing substance we know from the original game makes perfect sense. Official teasers already show scenes of massive Originium explosions and entire cities being leveled by uncharacteristically strong Catastrophes, so that plot line is almost guaranteed.
The theory that the Endfield Administrator is the original creator of the Doctor’s stasis pod is also well-supported by leaked concept art showing a pod identical to the Doctor’s in an Endfield Corporation lab. This would explain why the Doctor has such a unique tolerance for Originium and ability to lead Rhodes Island, as they would have been created during the Golden Age when Originium research was far more advanced. But not all theories hold up. The idea that Endfield is set in space, for example, is completely debunked by official statements confirming the entire game takes place on a previously unexplored region of Terra. The popular take that Amiya will appear as an ancient immortal entity also doesn’t hold water, as official lore confirms her race has a maximum lifespan of around 200 years.
You should take all unconfirmed lore leaks with a grain of salt, because Hypergryph is known for changing details right before launch to avoid spoiling major plot beats. I’ve fallen for fake leaks before, so I only trust information that comes directly from official social media accounts or developer interviews. Even concept art leaks can be misleading, as many assets are changed or cut entirely during the final stages of development.
We still have a lot of gaps to fill when it comes to the Arknights Endfield prequel, but every new trailer and developer update makes it clearer that this game is a core part of the Arknights universe, not a throwaway spinoff. Even if you only care about open-world gameplay and have never touched the original Arknights tower defense game, you’ll be able to follow the prequel’s story with no prior knowledge. But if you’re a long-time fan who’s spent hours digging through operator files and event lore for hidden clues, you’re going to be rewarded with answers to questions you’ve probably had for years. I’ll be updating this guide as more official details drop, so check back regularly for new timeline updates, character reveals, and lore deep dives.