The game is set in an alternate 1886 where the eruptions of Krakatoa and Mount Tambora , the dimming of the Sun , and other unknown factors caused a worldwide volcanic winter . This in turn led to widespread crop failure and the death of millions . This event roughly lines up with the historical 1883 eruption of Krakatoa , a volcanic event that led to global cooling
1883 eruption of Krakatoa
1883 eruption of Krakatoa
Frostpunk