• "Fallout 4" is an open world action role-playing video game developed by Bethesda Game Studios and published by Bethesda Softworks.

"Fallout 4" is an open world action role-playing video game developed by Bethesda Game Studios and published by Bethesda Softworks. (Photo : Facebook)

Following its much hyped release, "Fallout 4" has become a staple bet by most gamers to win the Video Game of The Year Award. Despite its recently invigorated fame, "Fallout 4" developer Bethesda Studios appears to be cooking something new for the game's first downloadable content which is rumored to feature underwater worlds.

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Rumors regarding the possible underwater world as the first DLC of "Fallout 4" came after gamers discovered a harpoon gun hidden deep into the game's code. Speculations were fueled after close inspection shows that the gun spouts bubbles every time it is fired, according to Games Radar.

Aside from the harpoon gun hidden in the code of "Fallout 4," some gamers also found out that there is a free wearable Power Armor underwater which can be used on the game. Additionally, the latest "Fallout 4" concept art reveals some indications that the game is heading towards an underwater-themed downloadable content.

The recently released concept art included an octopus, a man standing at the bottom of a body of water, a submarine and a first-person view of the underwater environment, according to Parent Herald.

Bethesda Studios has yet to comment about the development status of its first DLC for "Fallout 4." Despite this lack of media information, dedicated gamers are still busy uncovering clues deep into the game's environment.

"Fallout 4" was released on Nov. 10. It is available for the PlayStation 4, Xbox One and Microsoft Windows platform. The game is set in post-apocalyptic Boston in 2287. The game shattered several world records upon its release when it managed to ship more than 12 million units within the first 24 hours.