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A stylized graphic of an atom, a rocket, and a radiation symbol.

Can you handle the high stakes of nuclear weapons trivia and beat the countdown?

Nuclear Physics

ZapStacks

5

Zaps

115

Fat Man, Little Boy, and the flash at Trinity. You know the names, but do you know the yields? From the Manhattan Project to the Cold War’s brink, the stakes couldn't be higher. Step up and prove you can handle the pressure before the countdown hits zero.