Batman: Vengeance is a 2001 video game that was released on all major platforms of the sixth generation of console games. It was developed and published by Ubi Soft in conjunction with Warner Bros. Interactive Entertainment and DC Comics.
The game is based on the television series The New Batman Adventures, itself a successor to the acclaimed Batman: The Animated Series. In the game, Batman finds himself entangled in a web of his villains' schemes while attempting to stop the Joker's plan to destroy Gotham City.
Plot
After saving a woman named Mary Flynn, Batman learns that the Joker has abducted Mary's son, Toby, and is holding him for ransom and will kill him if she does not pay up soon. Batman comes face-to-face with the Joker at a partially demolished Gotham bridge, and Mary reveals herself to be the Joker's companion Harley Quinn; Toby was never real and the abduction was merely a farce to lure Batman into a trap. Batman then engages the Joker and defeats him, but in the fray, the villain falls off the bridge to his apparent death. A distraught Harley leaves and Batman monitors her activities, knowing that the Joker is most likely alive and Harley could be his only opportunity to learn more of the Clown Prince of Crime's true plans, making her a more valuable asset on the outside than she would be incarcerated.
As Batman continues to keep tabs over Harley, he is alerted to an attack by Mr. Freeze on a scientist named Isaac Evers, whom he believes sent him a promotional video for a drug developed by Evers, known as Promethium, for treating conditions on the cryogenically frozen. Freeze had apparently used the drug on himself and his wife, Nora, but to no avail, infuriating Freeze with the implication that Evers had sent him the tape to taunt him. Freeze abducts Evers and escapes the complex in a helicopter. Batman gives chase in the Batwing and eventually rescues Evers, who explains his work and what Freeze was after, lying to Batman by telling him the source of his funding originates from a grant supplied by the Wayne foundation.
Knowing this to be a lie, Batman tells Evers to go into hiding, and goes to learn more about the source of Issac's financial backing, eventually learning that the scientist had his funding pulled, due to Promethium being far too unstable, as it contains several flammable particles. Evers was able to successfully continue in his research after receiving funding from the Joker, with every rise in Evers' budget coinciding with a successful bank heist of Joker's doing, implying the villain had plans of his own for the drug. Freeze and his gang then arrive again to find Isaac, but are eventually stopped by the Dark Knight, with Freeze encased in ice from his own freeze gun. Later, an unseen person leaves Poison Ivy a mysterious substance. Ivy discovers the chemical holds unique particles that, when exposed to any type of plant life, transforms plants into sentient and vicious creatures. Using this to her advantage, Ivy manipulatively puts several of her upgraded plants inside powerful politicians and businessmen, including Gotham's mayor, Hamilton Hill, through apples and other foods, blackmailing them for money, power, and even environmental donations. Knowing the origin of the chemical, Ivy has her plants begin rebuilding Gotham Chemical in an effort to produce more of the chemical and create an antidote to the condition the mayor and the others have to use as collateral to ensure that they follow through on their deals. Harley alerts Batman towards Ivy's activities to ultimately stop her from going too far in her schemes. Batman defeats Ivy by electrocuting all of her plants, obtaining the cure and saving Mayor Hill and the victims of Ivy's schemes.
After apprehending Ivy and exiting the ruins of Gotham Chemical, Batman witnesses Joker's men hijack a blimp, and goes to talk to Harley. She informs him that, with Joker gone, some of his men were still operating on their own and left with some of the villain's toys and the blueprints to the historic Gotham Gasworks. Upon arriving at the Gasworks, Batman discovers Joker's men sending the villain's flammable toys into the pipe network, which lead throughout the entire city, and opens the gates to the sprinkler system to flood the complex's pipes in order to stop the toys. After defeating Joker's men, Batman finds a tied up Evers, the apparent mastermind behind the Gasworks plot, who claims he only wanted to burn down Gotham Industrial in order to collect on the insurance money, as he couldn't collect on the damage left by Freeze without revealing his financial backers, particularly the Joker. With the Joker having funded the research with filthy lucre, Evers would be arrested for criminal facilitation and conspiracy if he revealed his affiliation with the notorious criminal and resorted to hiring the Joker's men and using his equipment in order to throw the cops off his trail after burning down his business, but the gang eventually turned on him, tied him up, and embarked on their own agenda of sending the toys throughout the city. The Dark Knight takes Evers outside for the arriving Gotham Police to take him into custody, but is forced to escape in the Batmobile after being framed for injuring Commissioner Gordon with a Batarang.
