L the ProLogue to Death Note: Spiraling Trap

L the ProLogue to Death Note: Spiraling Trap (L the proLogue to DEATH NOTE -螺旋の罠-, L the proLogue to DEATH NOTE -Rasen no Torappu-) is the third in a series of Death Note video games. The story is set before the Kira investigation depicted in the original manga series.

The game was released in Japan on February 7, 2008, two days before the release of the film L: Change the WorLd.

It also features the exclusive appearances of characters Jeffrey (a former Wammy's House orphan), Housekeeper and Alois Batesman.

The game was not released outside of Japan.

Plot
The game begins revealing a fictional island facing the Caribbean Sea known as Criella. The island is undergoing the crises associated with a civil war between government forces. Many people from the island have fled as refugees, particularly to the United States. However, the people of Criella are hearing stories of a development in America; immigrants have soon been found dead. Those responsible for these murders, as it has been assumed an individual or an organisation are causing these immigrants to end up like this, are known colloquially as The Moon of Criella. The FBI are said to attempt an investigation and continue to find themselves in very difficult situations, some involving fatalities. They would discover areas of potential interest and unintentionally set off complex explosives.

The nature of the case interests and leads to the involvement of L, who introduces a Communicator device agents should possess on their person should they work on the case and discover explosives, in order to defuse them safely with his guidance.

The player assumes the role of a rookie FBI agent who is knocked out during an undercover investigation, with Naomi Misora or Raye Penber depending on the gender selected. The player wakes in a strange hotel setting laid with the difficult traps found previously by other FBI agents. Possessing a Communicator, the player is assisted by L in their escape, feeding him information gathered while investigating their environment.

L Communicator Mode
The software also includes a separate "L Communicator" mode in which users can make friends with L (if male) or gradually involve themselves romantically with L (if female) by encouraging him to talk and giving him sweets you find in the main game. You will also unlock different backdrops for L the more sweets you provide him. A heart meter is displayed to the top right hand side of the display screen. This is an indication as to L’s perception of the player; three hearts are the maximum you can achieve.

The L Communicator Mode acknowledges the time selected on the player’s device, and he will comment about these when they visit him. For example, L asks if the player is unable to sleep should they visit him during the night. In addition, the sweets L prefers also varies throughout the day. You can judge this with a preference indicator next to the sweets when selecting which to give. There will a number of hearts from one to five.

L also knows the date. He discusses the spring, summer, autumn and winter month weather with the player. If the player visits L on special occasions such as Valentine’s Day and Christmas, they will unlock a relevant, special confectionary they can gift him.