Custom Night

Custom Night is an unlockable game mode in both modes of FNaW: Trapped Within. It is a mode very commonly seen in most FNaF inspired games.

Trapped Within
Custom Night gives the player the option to choose the AI levels of the active antagonists in the game and choose which room they want to play, allowing the player to play any room whenever they want or experiment in rooms they aren't familiar with.

 Single Room Mode  allows the player to set each character's AI from 0-5, and then choose which room they would like to play. This also allows the player to see which characters are active in which rooms. Phone calls are still present in the rooms. Time Machine Pieces cannot be collected in Custom Night.

 All-Out Mode  gives the player a challenge where they take on all 12 rooms at their highest difficulty, going immediately to the next room after completing one. This is one of the hardest challenges in the game. This mode is optional, but rewards the player upon completion. The player's progress saves if they either die or quit, so they can jump back into the room they were on.

Nostalgia Mode
Custom Night in Nostalgia Mode is unlocked after the player completes Night 6. It functions very similar to the Custom Night in the Trapped Within mode. The player can choose the AI levels of each character, which go from 0-10. Some characters can only be turned on or off. The Generator can also be turned on or off. They can then go in and play their own customized night.

 Challenges  are present in the Custom Night as well, a list of 13 of them are listed on the right. Completing a challenge unlocks more for the player to do. Challenges reward decorations for the player's office, and certain challenges even unlock Custom Night exclusive characters for the player to choose the AI of. If the player makes it to the final challenge, "Are You the One?", and completes it, they will be able to learn more about the mode's story.

Trivia

 * 1) The backgrounds of the Custom Night screens are references to previous fan artworks created for FNaW, drawn by BoxBird.
 * 2) Single Room Mode is a reference to Custom Room Edition, a game that Trapped Within was initially a remake of.