[[http://www.fanfiction.net/s/4683313/1/ Playing For Keeps]] is a KingdomHearts and VideoGame/TheWorldEndsWithYou crossover written by FlikFreak. Unsurprisingly, Neku is killed again (though, this time, it was an accident) and winds up in the Underground. Fortunately, his death is

!!The fanfic and it's sequel provide the following tropes:
* BigBad: [[spoiler: Sho in ''Playing For Keeps''.]]
* ComicallyMissingThePoint: Beat is this in spades. After the battles against [[spoiler:Sho and Xosh]], SOra mentions his real purpose in Shibuya: Finding the Keyhole. Beat thinks that Shibuya is in a giant box.
** And again in the sequel.
* HeelFaceTurn: The Zoners try to [[spoiler:clone Neku and create Xenuk and try to use him for their plan. Xenuk quickly disagrees with them and leaves the group.]]
* HoistByHisOwnPetard: [[spoiler: Xosh summons some Noise to block out the Music of Shibuya. The Noise however turn on Xosh rather quickly, since the Heartless he brought into the Underground have been depriving them of food [[note]]i.e players[[/note]] ]]
* TheManBehindTheMan: [[spoiler:Xosh, Sho's Nobody was behind Sho's revival and plot in ''Playing For Keeps''.]]