The great crash

The great crash was the worst thing humanity ever experienced as all of humanity died off. It's called the great crash because it was caused by a computer virus that invaded every computer on the planet.

The Virus
The virus known as 'Virus Alpha' was accidentally created by a glitch. And spread to every computer on the planet in 7 days.

The Panic
The virus and politicians let the public know that all nukes would be launched within a few hours. This caused 'the panic'. Within the 7 hours between the message and the first nuke that exploded over 56 governments collapsed. 12 hours after the message the only remaining governments were Palau and Vatican. only 30 minutes later also they collapsed. 14 hours after the message the last nuke drops. The last survivors will die in riots and from famine in the following 112 days. Humanity went extinct in 2030.