The Assassin's Creed Mars rumor claims Ubisoft is exploring Ancient Rome, while a separate mobile project called Pocket may head to Jerusalem. Here is what is reported, what is speculation, and what Ubisoft has not confirmed.
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A Rome rumor with a second shadow attached
The firmest fact around Assassin's Creed Mars is also the reason to be cautious: Ubisoft has not announced it. Eurogamer and Insider Gaming both report that the rumor traces back to French content creator Xj0nathan, also written as J0nathan, who says Ubisoft has an unannounced Assassin's Creed project codenamed Mars that is set in Ancient Rome. The same rumor cycle also names a second project, Pocket, described as a mobile Assassin's Creed set in Jerusalem.
That creates two layers of tension. Ancient Rome is the headline setting fans have been circling for years, especially because the series has brushed against Roman power before without making the imperial city the center of a main historical playground. But the mobile and Jerusalem details appear to belong to Pocket, not Mars, based on the reporting available. In other words, the current Assassin's Creed mobile rumor is tied to a separate codename, while Assassin's Creed Mars is the alleged Rome project.
Eurogamer says Xj0nathan claims two sources with access to Ubisoft backend systems backed up the Mars information. Insider Gaming says it has also heard the Mars and Pocket codenames, but could not verify the claims to its standards for an independent report. That distinction matters. There is a traceable source for the claims, there is corroboration of the codenames being heard by another outlet, and there is still no public Ubisoft announcement, trailer, store page, rating, platform list, price, or release date for either project.
What the Assassin's Creed Mars rumor actually claims
The Mars claim is simple on the surface: an Assassin's Creed game set in Ancient Rome is reportedly in some form of development at Ubisoft. Eurogamer attributes that to Xj0nathan, who also claims the setting will likely be linked to the upcoming Assassin's Creed TV series. Insider Gaming repeats the reported codename and Ancient Rome setting, while stressing that it has not verified the development claims well enough to report them as confirmed.
Keengamer adds the date context that J0nathan shared the information on November 6, 2026, and reports that neither Mars nor Pocket has been officially announced. It also frames the Rome pitch as a return to Roman history that the franchise has already touched through Assassin's Creed Origins characters such as Bayek and Aya. Eurogamer separately notes that Assassin's Creed has visited Rome before in 2010's Brotherhood, but that game used the Renaissance version of the city, not Ancient Rome.
For an action-adventure series built on architectural movement, crowd flow, assassination routes, and political violence staged through public spaces, Ancient Rome would carry obvious design weight. That is interpretation, not a reported feature list. No source here says Mars has naval play, RPG systems, a specific protagonist, a combat model, a map size, or a mission structure. The setting alone suggests amphitheaters, forums, villas, temples, and military spectacle could become the raw material for parkour and set pieces, but Ubisoft has not shown a single frame that confirms any of that.
The Jerusalem mobile project is reportedly Pocket, not Mars
The Jerusalem thread belongs to the second alleged project. Eurogamer reports that Pocket is said to be a mobile title set in Jerusalem. It also reports Xj0nathan's gameplay comparison: Pocket will allegedly play a bit like Assassin's Creed Valhalla's Mastery Challenge and look similar to the most recent Prince of Persia. Eurogamer adds that the hero's mentor is apparently a character called Myriam.
Those are unusually specific details for an unannounced mobile project, but they are still claims, not confirmed features. Ubisoft has not announced Pocket, has not named Jerusalem as a setting for a new mobile Assassin's Creed, and has not confirmed Myriam, Mastery Challenge-style play, or any Prince of Persia-like presentation. Keengamer says no additional gameplay details have surfaced beyond the rumored setting and mobile platform, and that it is unclear whether Pocket would revisit the original Assassin's Creed's historical period or introduce a different one.
If the Valhalla Mastery Challenge comparison is accurate, it points toward a tighter, test-based structure rather than the sprawl of a full console RPG. Valhalla's Mastery Challenge content was built around contained trials that test stealth, ranged play, and combat execution. Translating that idea to mobile would make design sense because short sessions, readable arenas, and repeatable objectives tend to fit phones better than sprawling horseback traversal. Still, that is a reading of the comparison, not a confirmed design document. The only reported mobile-specific claim is that Pocket is a mobile title set in Jerusalem.
Jerusalem brings the series back to its first silhouette
Jerusalem has a particular charge in Assassin's Creed because it was one of the major locations in the 2007 original, where players controlled Altaïr Ibn-La'Ahad during the Third Crusade. Keengamer makes that connection directly while noting that Pocket's exact historical period remains unknown. That gap is crucial. A Jerusalem setting does not automatically mean a remake, a direct sequel, or a return to Altaïr's era.
This is where the rumor becomes easy to overread. Ubisoft recently issued a statement about the future of Assassin's Creed in which, according to Eurogamer, it insisted there are currently no new remakes of the series' past games in development. That official position does not disprove Pocket, because a new mobile game set in Jerusalem would not necessarily be a remake. It does, however, cut against any automatic assumption that the Jerusalem rumor is secretly a remake of the first Assassin's Creed.
From a pacing and combat perspective, Jerusalem also fits the kind of smaller, denser play space a mobile entry might chase. Narrow streets, rooftops, courtyards, and guarded interior paths are core Assassin's Creed grammar. But again, the reporting does not establish map scale, mission format, camera perspective, monetization, controller support, or device requirements. The setting has design implications, while the project itself remains unannounced.
The TV connection is the shakiest part of the Mars story
The rumored link between Mars and the Assassin's Creed TV series is weaker than the reported codename and setting. Eurogamer says Xj0nathan claims the Ancient Rome setting will likely be linked to the upcoming Assassin's Creed TV series. Keengamer describes that connection as speculation from the content creator and says there is currently no evidence confirming a narrative connection between the game project and the TV production.
Gagadget, summarizing the wider rumor, says Netflix's live-action Assassin's Creed series is set in Rome and cites Variety for an original story in 64 AD with a possible 2027 window, while noting Netflix has not announced a premiere date. That makes the Rome overlap interesting, but overlap is not proof. A shared imperial setting could be coordination across media, or it could simply reflect that Ancient Rome is fertile ground for the franchise's long-running conflict between hidden orders, public power, and historical crisis.
The practical takeaway is that readers should separate three things: the reported Mars codename, the reported Ancient Rome setting, and the speculative TV connection. The first two are the core of the rumor as covered by Eurogamer and Insider Gaming. The third is an inference that has not been publicly backed by Ubisoft, Netflix, or a confirmed production document in the provided reporting.
Do not expect a reveal soon, even if the rumor is accurate
The timeline attached to Assassin's Creed Mars is distant and uncertain. Insider Gaming reports that if the Rome game moves further into production, it likely would not be heard from officially until 2029 or 2030. Eurogamer repeats that expectation and frames it as a reason not to expect news soon. That is not a release date. It is an outlet's current expectation based on what it has heard and on the state of the franchise.
Part of the uncertainty comes from broader movement inside Assassin's Creed. Insider Gaming says the franchise has gone through turbulence since former Assassin's Creed boss Marc-Alexis Côté left Ubisoft, making it harder to understand the series' internal roadmap with certainty. The outlet also previously reported that Assassin's Creed Hexe, described as the next mainline game, had been internally delayed by another year and likely pushed to 2028. Eurogamer notes that other reports have claimed Hexe could be seen next year, so even the nearer-term Assassin's Creed schedule is not settled in public reporting.
For players, the safest guidance is to treat Assassin's Creed Mars and Pocket as watchlist rumors rather than upcoming products. There are no confirmed platforms for Mars, no confirmation that Pocket will release globally on iOS or Android, no price information, no release window, and no official Ubisoft materials to compare against the claims. The idea of Assassin's Creed Ancient Rome is strong because it naturally suits the series' love of political theaters and lethal public choreography. The reporting trail, however, still stops short of confirmation. Until Ubisoft names Mars, Pocket, Rome, or Jerusalem itself, this remains a Ubisoft Assassin's Creed rumor with intriguing shape and a very long shadow.