Curse of the Darkness on the N3DS is far to dark to be considered functioning as intended. The N3DS is a mobile platform, and the issue is compounded 10-fold when not in a completely dark and glareless environment. This curse makes it impossible to clear floors without insane damage or insane health.

On Sheol, and Dark Room the curse is pitch black, and you cannot navigate the game in any regards.

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The developers have said that the curse cannot be fixed to be more visible, so I propose a patch is released to completely remove the curse from the N3DS version of the game.