https://fernandopereiraalves.itch.io/showdown
Alert: this game is not totally 3D, because it was made in a 2D Engine.
(This game takes place in a parallel universe) In 1940, Hungary invented the nuclear bomb and dropped it in Texas, caused chaos in the United States, nuclear bombs evolved for 5 years until the power went to the level of blowing up a country whole, you are from 2018, with a time machine that is in your bunker and works by means of a steam generator, you have entered the time machine and need to protect the United States from the Mark 2 nuclear bomb.