BF1 Megalodon [[File:\|150px]]
A Megalodon emerges from a puddle
Game	Battlefield 1
Type	Standalone
Map	Fort de Vaux
Accessibility	Conquest, 3 players needed. not available in pre-round & password protected servers
Prerequisites	None

After completing three steps a megalodon emerges from a puddle on Fort de Vaux, killing everyone in the puddle.

Overview

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Quick Guide

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[Show/hide] Full Solving Process

A vinyl record spawns in one of 5 possible fixed locations per round. It can be picked up and placed on the gramophone in the barracks. Upon interaction with the gramophone, a muffled piano song can be heard. The vinyl record itself has a label that reads "Les Requins, you're gonna need a bigger moat!" ("Les Requins" is French for "The Sharks")

Gramophone Song

The song has a 80bpm tempo, consists of only natural notes and spans 4 octaves. It is enciphered using the French Musical Cryptogram and it decodes to the following message:

SO YOU ARE HERE FOR THE SECRET THAT LIVES BELOW VAUX ARE YOU SURE YOU ARE READY FOR THIS JOURNEY DO NOT THINK IT WILL BE EASY AND DO NOT EXPECT ANY REWARD ALL YOU WILL FIND IS DEATH A HINT THAT IS ALL I HAVE FOR YOU SO LISTEN CLOSELY THE MEN THAT LIVED HERE KNEW ITS SECRET SEARCH WHERE THEY RESTED WHEN THEY DID NOT WORK

6x6 Key Square

Once the player has interacted with the Gramophone, a 6x6 key square appears on the book found next to the Gramophone. This will be used as the Alphabet Key of an ADFVGX cipher to decrypt some morse code messages later on. 6Z8QV147DGPJ5EIHKAUS9CFX3OTYBRM2NLW0

Chair Morse

Three special wooden chairs can be found around the fort, which is where the soldiers rested, as hinted in the Gramophone song. Sitting on them will cause a nearby light to blink morse code, along with revealing a clue about the keyword required to decode it. All morse code messages are encrypted using the ADFGVX cipher' and the same 6x6 key square mentioned earlier. The decoded messages reveal clues on how to awake the Megalodon.

NOTES:

Blinking light and clue may be obstructed by destructible walls or other objects.
Stepping off the chair will stop the blinking and hide the clue.
Blinking light is endlessly repeatable when stepping off and on the chair spawn.