In 1991, the USSR had nearly collapsed, but thanks to a coup d'etat in Moscow the USSR was alive and well. The soviet union, and the U.S. co existed(unwillingly) for many years. The relationship between the soviet union and the U.S. deteriorated rapidly over the years, until 2019, when things reached a breaking point.
At that point in time, the USA and the Soviet Union were on the verge of war. Both nations agreed that if they did in fact go to war, then they would refrain from using atomic weapons. Due to a chain of economic downfalls in CHina, the only way for China to stay afloat was to officially join the Soviet Union.
The Soviet Union used China's massive human resources to invade all of Europe, including Great Britain. All that remains of Great Britain is Ireland.
After that, the USA and quite a few other capitalist nations from the west decided that it was time to end communism once and for all. The US' lead coalition kicked things off with three massive invasions of Europe and Asia. The first two invasion forces would be launched from free Portugal and Ireland, and their target would be the whole of Europe. The third invasion force, however, would be launched from Japan with the aim of capturing the entirety of Asia.
The invasion force in Europe was doing good for a while, making it as far as eastern China and the outskirts of Berlin, Germany. But the manpower of communist China and the weapons training of the Soviet army allowed the USSR to overrun the US and NATO troops in Asia and Europe, forcing them out of the two regions, and all the way back across the Pacific & Atlantic oceans. Japan was the first to fall to the Soviet military. At this time, the Soviets had developed long-range naval and air transport vehicles & ships.
After the defeat of Japan, the Soviets launched a full-scale invasion of North America from Ireland, which they had since overrun with communism. Japan had also fallen to communist troops, and both occupied countries sent in a force estimated at two million Soviet troops, invading Alaska from the north coast of Japan, and then into Canada. The second force consisting of the same amount from Ireland would hammer the east coast of the US into submission. At the time of our story, the USA is on the losing side of things.
With western Canada, the north western tip of America, and the east coast of America under Soviet control, the US was willing to take anything they could use as a weapon in hopes of turning the tide of war in their favour. That newfound WMD came in the form of the super-intelligent animatronics of Freddy Fazbear's Pizzaria. The government was paying Fazbear Entertainment to conduct studies on the animatronics, in the hopes of creating an army of sentient robot war machines bent on destroying communism.
*side note*
This is the rewritten version of the prologue, rewritten by le co auther, Mr. Aleydo, be sure to check out some of his storys when you get le chance. :)
Stay Frosty