The World Ends With You Cheats - Nintendo DS
When you beat the game, you can start over again with your previous data on New Game +.
Hidden ending scene - After defeating the final boss of the main story, collect all of the secret reports in the game, including the one in Another Day.
Chapter Selection - Beat the game once to unlock this mode. It lets you return to any part of the game and replay it with bonus objectives.
Ultimate Difficulty - After beating the game, you can select A New Day Chapter, and go to Shiba-Q Headquarters and on the 3rd floor you will be able to purchase it as a quest item.
"Another Day" chapter - To unlock this chapter you must beat the game. It will appear on the chapter selection menu. This mode is a non-canonical extra chapter.
Angel Feather - Complete "Final Time Attack" in the Room of Rekoning during "Another Day".
My Phones - Complete Hanekoma's Noise Form at the top of Pork City in "Another Day" after completing the game.
Tin Pin Bahamut - After beating each of the five Black Skullers in "Another Day", head back to Molco and beat the Wizard of Slam in Tin Pin Slammer.
View total play-time
Hold [L] + [R] on the save data menu screen to be able to see how long you have played.