Earth-256-B!

The end of the third millennium had been the muse of dreams for innumerable centuries. A seemingly mythical point in time; a promise waiting to come to fruition thanks to the working class, especially during the millennium.

Artists and writers created fantastical renditions of a utopian — or dystopian — future. Scientists from any and all fields progressed at a wonderfully exponential rate, building upon each others' ideas to sculpt mankind's understanding of our reality. Engineers and pioneers worked hand-in-hand and, together, brought about countless innovations to manifest such idealistic visions while saving humanity from its self-inflicted extinction in the process.
Even the common people, worked to near-death from tedious work with little compensation, found themselves placing their hopes into the pursuit of happiness; a better future.
Upon glimmering podiums and tech summits, the future was salvation and a civic duty to make it as best as can be. Destiny seemed to be powered by the beating hearts of a now-reignited species; the indomitable human spirit is a wondrous thing, no?

Now, in the pastel-hued era of the 2990s, the future managed to surprise everyone by presenting itself in a way no one had ever expected.

It's the exact fucking same as the past.

Well, maybe that doesn't do it justice. Humanity found itself in the glorious graces of the Astro-Nuclear Age by breaching the seemingly insurmountable barrier of becoming a type II civilization thanks to the completion of the Valse d'Argent during the late 2700s, for example.
Hey, good for them, but do these ends really justify the numerous unkept promises made by megalomaniacs high off their own power over literal centuries? Can these ends even justify their more-than-dubious means?

Please, look around.
The general quality of life is better than it was in the 21st century by a long shot (in first-world countries, anyway). However, the denizens are more exhausted, empty, and demoralized than ever, crushed by the weight of their dreams and wishes damned to never come true. All that's left is to artificially recreating their perfect, idealized, vapid futures by over-saturating cyberspace.

Your impact upon the world is less than negligible.
Said impact will be financially exploited down to a literal science by the real owners of the future and you will do nothing because humanity will never learn to predict problems and stop them until the consequences show their unholy, wretched faces and its too late to do shit but take it. It will never learn from its mistakes, it will forever embody the 'move fast and break shit' philosophy, and you can't do shit about it because you can't foot the bill to buy the privilege to hold meaning in a society that doesn't fucking care, for one reason or another.
Destiny is out of your price range. Don't take it personally.

Cities are cleaner, robots did not take over the world, flowers line every corner and edge, average day-to-day lives are — by 21st century standards — are excitedly larger than life courtesy of the rise of supers.
The future is as hollow and worthless as a dream, but at least it smells nice.
Every day is as bright and sunny as every day before, and will be twice as bright and sunny as every day after. Maybe that's all that matters.

Humanity

Main article: Mutations, Evolution, Inherent Revolution

Humanity prides itself as being resilient. However, resilience is as subjective as it is scientifically unproven.
Although, they did manage to survive to the late 2900s, so — surely — that amounts to something! …But not without struggles and — most notably — questions.

Like, what's a mutant, and how is that different from a mutate? How the hell does that shit even work? Have humans even done anything remotely significant or changed since the twenty-first century?

Supers

Main articles: Supers and Super Teams

Immediately following the birth of mutants was the rise of supers.

Who — or what — are 'supers' and how have they affected the world around them? What is this so-called 'super scene' and the strange power-scaling celebrity sphere hell these individuals have formed? Most importantly: can you trust them?

The United Republic of Leathucaria

Main article: United Republic of Leathucaria

The United Republic is a country that is totally, most indubitably, 100% NOT the United States at all whatsoever, thank you very much. They are two entirely separate entities, with the latter no longer existing.

Unlike the States in its wretched, writhing chaos, the Republic is a proud and collected nation. It's much more stable than the hellhole of America could ever be, thanks to the hard work of its diligent people and the astute minds of its impeccable leaders, who are nothing but dedicated to striving toward the future in the name of starlight and prosperity!

Ville-de-Nouvelle-Yorke

Main article: Ville-de-Nouvelle-Yorke

A city that never sleeps, yet always dreams.
Like most dreams, everything happens, but nothing changes (for the better, anyway; everything somehow worsens with each passing day).

La Pomme Grosse — like the rest of human society — is ferociously gripped by the intensity of its own spectacle. Despite the strange history that haunts both Nouvelle-Yorke and the United Republic, both everything and nothing feels notably different when comparing 2990s Nouvelle-Yorke to 1990s New York; seems like all of its bumbling inhabitants are stuck in a temporal limbo of their own making waiting, waiting, and waiting for something to happen.

Also, Nouvelle-Yorke simultaneously has the highest amount of supers in the world, but also has the one of the highest crime rates. Does anyone even care anymore?