Steam World: My Invention Will Defeat the Nightmare

The earth suffered an apocalypse. All electronic equipment in the world was destroyed. War and famine ravaged the land. When humans tried to rebuild, they found that most technologies no longer worked. The laws that govern the world have changed! After the end of the world, steam technology became popular. Humanity has entered a new golden age. Then, the Seven Nightmares struck. People with super powers appear. Mutants have taken over much of the world. This is the beginning of the end for Mana! My name is Edward Tesla and I was born during the Apocalypse of Mana. This is my story of trying to protect everything I care about in this living hell. My invention will defeat the nightmare and save the world! Steam rifles, steam tanks and Steam mecha. My invention will surpass them all!