DC Video Game plots on Earth-777
There's plenty of room for more stories about the heroes and villains of Earth-777, even if some of them are different than others.
Injustice: Gods Among Us
: Earth-773 is a brutal police state ruled by Superman after the destruction of Metropolis resulted in him executing the Joker followed by taking over the United States (after said government collapsed into economic, social, and political ruin as a result). Eventually, Superman and the Justice League began seizing more and more power from other nations until a One World Government was installed underneath his (apparently) benevolent reign.
This was achieved with the assistance of Tony Stark (whose family was killed while visiting Metropolis), Lex Luthor (who was never a villain), Charles Xavier (who, like his Ultimate counterpart, saw no reason not to meddle with minds), and a number of other superheroes whose behavior was significantly more extreme in this reality.
How extreme? Billy Batson killed Black Adam when he was seven-year-old, during their first battle.
Advised by the Wisdom of Saul.
The Wizard chose Billy for his brutality of heart.
Earth-773's resistance was headed by an alliance of Captain America, Batman, and Magneto. Unfortunately, Superman's brutality grew ever more extreme as his closeness to final victory increased. All mutants were drafted into his army from birth and inducted into his ruling class while those were resisted were destroyed. Magneto's murder at the hands of Superman was accompanied by Captain America dying at the hands of the Punisher's sniper rifle. Batman, knowing the battle was lost, retreated and worked to do what little he could to undermine the Emperor of Steel.
Eventually, this included seeking heroes from another world. Arming them with a temporary nanite-reinforced set of bodies that gave them the strength to fight Superman even if they were fragile mortals, the heroes managed to capture the dictator and bring him to justice on Earth-777 along with the rest of his inner circle. S.W.O.R.D fears retaliation from Earth-773 as they remain fanatically loyal to their despot.
Batman: Arkham Origins
: A Christmas story related to young Damien Wayne by Dick Grayson combining elements of Knightfall, The Long Halloween, Batman: Year One
, and a half-dozen other stories.
There were a few details which were fairly knew to the Bat Computer, though, including the fact that Edward Nygma briefly served as a superhero before taking on his villainous persona. "Enigma" attempted to rob the entirety of Gotham's elite of their wealth and blackmail them into honesty. Ultimately, though, Edward Nygma suffered a complete breakdown when Batman exposed his motivations as being ultimately self-serving to the entire world. Thus, was the Riddler created.
The Riddler has done his best to cover up this element of his past, especially that he was also the head of Gotham City's Cybercrimes division. The idea that he'd ever do something so mundane as being a POLICE OFFICER is a terrible secret he must suppress.
This has included murdering a number of the police officers alive during that time. Amusingly, Commissioner Gordon never bothered to learn the guy's name--a denial that stings the Riddler so much more keenly than knowing the truth.
One element that Damien didn't remotely believe was the Avengers showing up at the end to distribute Christmas presents as well as Daredevil's team-up with Batman to find the Kingpin (hiding in Gotham City from the Rose). Amusingly, those were also true stories to Batman's second Christmas in Gotham.
Batman: Arkham Asylum
: Also known as the LAST breakout from Arkham Asylum. The Joker had a fairly typical plan of arming the inmates with Titan (a super-enhanced version of Venom created by combining it with Gamma-Radiation and DNA from the Abomination) before trying to kill Commissioner Gordon.
This particular escape was noteworthy for the fact the asylum was also filled with a number of Spiderman villains and Batman ended up having to be rescued by the notorious Wallcrawler. Batman's assistance prevented Peter Parker from being possessed by the dying Otto Octavius and the two managed to defeat the Joker's Hulk-enhanced form.
The events of this night were notable for the fact they would signal the end of the Joker, the end of the revolving door at Arkham, and usher in something terrible.
Batman: Arkham City
Batman actually laughed for the first time in front of the Joker, though, at the Spectacular Spiderman's heckling.
Which may explain why the Joker became suicidal in Arkham City.
: Having used his "salvation" of Gotham City after the Great Earthquake to get elected, Lex Luthor was less willing to pay the check for rebuilding. Instead, with the assistance of Norman Osbourne, they created plans for a massive prison called Arkham City. Literally, they intended to turn a quarter of Batman's city into a gigantic American Gulag.
Pardoning Doctor Hugo Strange and placing him in charge (as a VERY silent partner), Lex Luthor commissioned massive Sentinels to guard the place and prepared it as a holding area for mutants, political dissidents, and other people who would serve as enemies to his regime.
Batman WOULD have stopped this NIGHTMARE even if he had to blow up the Sentinels himself but was away from Gotham City for half-a-year recovering from the death of Darkseid. Dick Grayson, despite his many skills, proved unable to challenge events and mostly did his best to get prisoners out of the disgusting place.
In the end, after his resurrection, Bruce Wayne was dumped into the prison and managed to uncover Ra's Al Ghul's plans to kill the half-million prisoners within. The cavalry arrived in, of all people, Magneto and the X-men who eradicated the walls and helped the innocent as well as guilty alike escape. Perhaps the most telling element was, faced with an example of humanity's purest evil, Magneto spared the city due to the heroic efforts of Earth's greatest homo sapien
These events lead to the collapse of Norman Osbourne's regime and Lex Luthor formally removed from office.
Oh and the Joker apparently died along with Talia. I wonder how long that will last.
Maybe longer than people expect as imposters have already appeared for the Joker from long-time Arkham patients but Harley Quinn's "pudding" remains in the ground.
Talia also became very belligerent when she next showed up--leading some to believe she's suffering from Lazarus Pit madness or may be an imposter.