Top Definition
A type of style similar to what the world thought the future would be like in the 1930s and 1940s. Noticeable in games such as the Fallout series. A specified type of retro-futurism. Often typified by an abundance of nuclear power, art deco, and computers small enough to fit in a mere one room.
John: The best way I can describe the Fallout games to you is... is...
Ted: Steampunk?
John: No, no... more like... Atompunk.
Ted: Good enough.
by Dmitri Tokamak March 27, 2009
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