On July 28th 1914, an assination took place in Sarajevo. Archduke Franz Ferdinand was shot in his vehicle by Serbian Gavrilo Princip. Immediately World War 1 started and it was to last until November 11th 1918. WW1 would have a death toll of 15-22 million, both military and civilians.

Be any regiment or class in the Napoleonic Wars. You are in the Napoleonic Wars. A zombie plague known as the Blight is ravaging Europe. It is said to have started in the Burning of Moscow.

After a zombie virus broke out, it turned 45% of humanity into zombies that get weaker overtime.

You are in the SCP universe. You can work in the SCP Foundation, Pratva, Chaos Insurgency, GRU-P or whatever else there is. You can also be an OC or canon SCP.

This is the Backrooms, duh.

In Japan during the 1570s, a plague turned people insane and caused them to fight the uninfected. You and a few other soldiers of different clans have to escape Japan before you fall. Ships were taken and you're the only one left with the few soldiers by you. Clans: Mimura, Honma, Asai, So, Asakura, Shimazu, Mori, Oda, Tokugawa, Uesugi, Tendai, Takeda, Ashikaga.