Scribblenauts Unmasked includes many new additions, including the DC Universe plot and the new addition of reputation, which can buy certain places and costumes from the Batcomputer. Certain teams can also be searched, but with various rosters; for instance, the roster of the Justice League is the same of that in the New 52, with Superman, Batman, Wonder Woman, Green Lantern, The Flash, Cyborg and Aquaman.
Many of the game's features return from Scribblenauts Unlimited, such as adding adjectives to existing objects without the use of potions, although the only way to get Starites is to participate in battles against DC super villains and Doppelganger, who always appears in these battles.
In the Wii U version, unlike the previous games, Scribblenauts Unmasked features co-op multiplayer, also dubbed Sidekick mode. In Sidekick mode, a second player can use their Wii Remote to highlight a character or object; after non-stop highlighting for a few seconds, the player can play as that character alongside Maxwell and use that character's abilities (for example, playing as Starfire will allow the player to fly and shoot star bolts at enemies). If the player highlights an inanimate object for long enough, he or she can bring that object to life and play as it; doing so will cause the object to float in mid-air in order for the player to move. The player playing as Maxwell can also purchase costumes that give Maxwell the powers or weapons of that respective character.
Another new feature is Maxwell's utility belt, which can be used to summon certain characters and objects without the use of Maxwell's notebook; examples include a grappling hook, a jetpack, the Batmobile, Beast Boy, Raven, Oracle and Starfire.
Plot
The story starts off with the narrator (Jim Piddock) telling the player about Maxwell and his twin sister Lily, both of whom have a passion for comics and often argue over which of their favorite characters would win in a fight. In order to find out for themselves they use Lily's magic globe (which allows the user to teleport anywhere they desire) combined with a page of Maxwell's notebook (which can bring to life whatever is written in it), but in the teleportation process, the globe is shattered as Maxwell and Lily land in Gotham City and the starites which power it are scattered throughout the DC Universe. Batman finds the children in an alley and believes them to be criminals until Maxwell uses his notebook to aid Batman in a battle with Deadshot. Upon Maxwell and Lily gaining his trust, Batman learns about the starites and why the children need them and offers to help them find them. Batman then reveals that The Joker has been aided by someone who matches Maxwell's description.
Rushing to the Monarch Theatre, Batman, Maxwell and Lily arrive discover Joker's new ally is Maxwell's villainous counterpart Doppelganger, who is attempting to aid the villains in getting the starites for nefarious purposes. After Joker and Doppelganger are defeated, they are somehow able to teleport away before the police arrive. Commissioner James Gordon then reveals that he found the first starite and gives it to Maxwell. Batman grants Maxwell and Lily full access to the Batcave and alerts the rest of the Justice League about the situation at hand. With the first starite restored to the globe, Lily can now teleport Maxwell anywhere in the DC Universe, but lacks the power to take them home. Maxwell is then sent to Metropolis after Superman provides news of a starite's presence.
In Metropolis, Lois Lane and Jimmy Olsen are tied to explosives and guarded by Metallo. Fortunately, Maxwell is able to lure Metallo out of the building so that his kryptonite heart is too far to affect Superman, who proceeds to save the hostages. Apprehended by the police, Metallo reveals that he was hired by Lex Luthor to stall Superman. Maxwell and Superman then head to Lexcorp where Doppelganger uses his notebook to turn Luthor into a kryptonian, making him a match for Superman. After fighting off Doppelganger's creations, Maxwell uses kryptonite to weaken Lex, while giving Superman lead armour so that he won't be affected. Due to their failure, an unseen criminal mastermind teleports Lex and Doppelganger using the same technology that teleported Doppelganger and Joker earlier. Superman manages to find the starite in Lex's lead vault and tells Maxwell not to feel so guilty about summoning Doppelganger. Hal Jordan then provides Maxwell with access to Oa.
On Oa, Sinestro and Doppelganger have obtained another starite, but it is swiftly stolen by Larfleeze, who considers eating the starite. While Green Lantern holds off Sinestro, Maxwell distracts Larfleeze long enough for him to steal his Orange Lantern power battery, draining just enough greed from Larfleeze to have him give up the starite. Larfleeze then returns the starite, regains the battery and makes his leave. Sinestro and Doppelganger are forced to retreat after Hal summons the rest of the Green Lantern Corps for backup.
Back at Wayne Manor, Maxwell attends a party hosted by Bruce Wayne. However, one of the guests is soon revealed to be a henchman of Ra's Al Ghul and upon the party guests fleeing and Maxwell and Batman apprehending the spy, Ra's and Doppelgänger arrive and summon the League of Assassins to distract Maxwell and Batman while they search for the starite. Batman and Maxwell manage to defeat the League and Ra's, who failed to find the starite, forcing him and Doppelgänger to reluctantly return to Doppelgänger's friend empty handed. Alfred Pennyworth then reveals that he found the starite in the garden before the party started and chose not to show it until he felt it was necessary.