Nightmare Mode is one of the available game modes in Dead Rising 3. In the game's regular story mode, there are checkpoints, and the player has the ability to save anywhere. The time limit that was present in the previous installments of Dead Rising have been severely lengthened. While playing nightmare mode, the player will be able to play a more traditional Dead Rising experience. It is available from the beginning of the game, and any progress that you have from other save files will be integrated into a nightmare mode save file.