There is a hidden room in the Arkham mansion, where after applying three sprays of the explosive gel on a wall, players can enter and see blue prints, pictures and plans for the sequel, Batman: Arkham City (2011).
The creators of the game decided that in order to have the voice acting top-notch, they'd use seasoned Batman actors from Batman: The Animated Series (1992). 凯文·康瑞 reprised his role as Batman in the game; as did 马克·哈米尔, who voiced The Joker; and Arleen Sorkin, who provided the voice of Harley Quinn. Although Conroy and Hamill would continue to voice their characters in the series, Sorkin's voice for Harley Quinn is replaced by 塔拉·斯特朗 after this game.
The game is very faithful to the comics and uses Batman's rich history and decades of DC comics mythology as a narrative guide, visual reference and the opportunity to explore more of the darker complex themes each of the villains embodies.
Killer Croc originally started out as a man born with a unique skin disease that gave him scaly skin and very reptilian-like attributes. The version of the character in this video-game reflects his appearances in the comic books after the year 2000, where he actually mutates into a rather large crocodile.
The Game's version of Arkham Asylum is heavily influenced by the version that existed in the comic books, as it features strong elements from the stories of Alan Grant, the limited series "Arkham Asylum: Hell on Earth" and very obvious references to Grant Morrison's graphic novel: "Arkham Asylum: A serious house on a serious earth", among other influences.
Even though this is an open world "sandbox"- type game, limited to Arkham island, at no point does Batman take a rest from his detective work. The game saves every time the player enters a new area on the island.
There is an amusement ride on Australia's Gold Coast at Warner Brothers Movie World themed to the game. A suspended looping coaster with VR connection, the ride simulates the Joker and Harley's shock therapy, including trains themed to electric chairs and a que containing Titan formula and character Bios.
As a form of anti-piracy measure, when an illegal copy of this game is played, Batman's cape will open and close whenever he's flying. This renders certain tasks unachievable and the game impossible to beat.
Several design choices point towards the game originally taking place in rainy weather. It's raining in the opening cutscene, whenever Batman is inside the Medical Facility lightning strikes can be seen, and several guards and inmates are wearing raincoats. It's possible that the game was planned to have rainfall, before it was removed, possibly due to performance issues. In Batman: Return To Arkham, there is now rainfall in free roam, either to address the opening and Medical Facility rain or due to the improved hardware allowing previously unavailable, yet desired, effects.
While rescuing Dr. Young you can hear her telling the mooks to let her speak directly to Joker, a seemingly unwise demand that you wouldn't expect from a garden-variety hostage. But you might expect it from someone who had unwittingly done business with him and wants to try resolving such an incriminating situation quietly and privately.
Joker's early design featured him wearing a "mad scientist" outfit to co-ordinate with Harley Quinn's "nurse" outfit. But this was changed in favor of a more traditional look. Also, the sides of Joker's mouth were originally torn or scarred, although this was scrapped so it wouldn't appear similar to Joker's appearance in the live-action Batman film The Dark Knight.
Titan Joker's design was originally going to look very different. According to Carlos D'anda: "I had initially envisioned him as a 'spiderlike' creature more than anything... some disjointed, messed up looking monster straight out of an Aphex Twin video or something...." However, he was eventually forced to make Titan Joker look more like the other, more muscular, Titans.
The very first iteration of the game was "a full rhythm action game". The second version was 2D, only the combat was rhythm-based and "involved coloured circles bashing into each other". This eventually evolved into the current Freeflow system.
The character of Jervis Tetch/The Mad Hatter was planned to appear as a villain on a children's hedge maze. He, and the maze, were scrapped early in production as there was no place for either of them in the game's plot.
Many characters who are never seen, but leave traces of themselves behind as Riddles, go on to have major roles in the sequel. For example, the player can find Catwoman's whip and goggles on display in a glass case, Mr. Freeze's, Two-Face's and Clayface's cells, a series of case files written by Hugo Strange, and a duty schedule that lists Dr. Thomas "Hush" Elliot as an employee. Ra's al-Ghul's corpse even shows up in the morgue, only to vanish when the player returns.
at one point, a security guard angrily tells Joker as he's being taken back to Arkham that he'll pay for the deaths of three of his friends from the previous escape, only for Joker to be shocked that he only managed to kill three, and state that he'll try to improve by killing 100 more people the next time he escapes. By the time of the end of the game, he did kill well over 100 people at Arkham.
At the end of the credits, there is a short cutscene which randomly gives the player one of three endings, where a box is floating on water and suddenly a villain's hand grasps on to the box, either Scarecrow, Killer Croc, or Bane. According to Rocksteady, Scarecrow is the "official" ending and that he survived being torn apart by Killer Croc earlier on in this game, as he is featured in the newest Batman Arkhamverse game, Batman: Arkham Knight (2015) where Scarecrow appears to look extremely horrible and grotesque.
This game features the second largest collection of villains appearing in a Batman Video game including cameos, after the verifications made by it's sequel, Batman: Arkham City (2011) (as of September 2011). Those who make appearances are The Joker, Dr. Harleen Frances Quinzel/Harley Quinn, Edward Nashton/Edward Nigma/The Riddler (although he is only heard and not seen beyond the character biography artwork), Waylon Jones/Killer Croc, Dr. Jonathan Crane/The Scarecrow, Bane, Dr. Pamela Lillian Isley/Poison Ivy, Victor Zsasz, the dummy known as Scarface (albeit without the assistance of the ventriloquist Arnold Wesker) and Basil Karlo/Clayface (who is also not seen in his true form but in the guise of multiple characters in a cell in the penitentiary).
Batman: Arkham Asylum was "remastered" for the Xbox One and PlayStation 4 as part of the Batman: Return to Arkham (2016) Collection. When the remaster was initially revealed on May 18th, 2016, there was so much outrage about the very apparent graphical downgrades and stylistic changes that the remaster's release date was pushed from July 26th, 2016, to October 21st, 2016, in order to address the issues. The final product indeed ended up looking better than the reveal trailer footage, but many of the stylic changes remained, much to fan dismay. The most evident of these changes was to the character models - in particular The Joker, who was given a more youthful complexion and colour scheme as opposed to the original more aged design.
Scarecrow being in the game was kept a secret as to surprise players. Also, when the player encounters Scarecrow for the final time, the game makes it seem like Scarecrow is messing with our heads as well when the game appears to glitch, crash and restart. This is a sham as the new opening sequence has several things out of place: "BATMAN MIGHT BE ESCAPING PATIENT" sign the upside down messed up batsignal Joker driving Batman in the batmobile to Arkham Scarecrow being the receiving Doctor Finally, the Joker kills the player by then saying to move "the middle stick" to avoid Jokers lethal shot. This is also a sham since there is no "middle stick" Once you select restart, Batman emerges from a makeshift grave and starts the final Scarecrow mini-game. Upon completion, the game will continue as it is supposed to.