Doomsday Butterfly Effect System

I, Shi Yi, despaired of reality, decompiled a "Total Stealth" technology, and created my own world. However, it suddenly raised the chess piece, took away the world that belonged to me, tampered with my background, and even gave me a so-called mission and wife. I don't know what the system is going to do. This world is very weird. Zombies have a black core. They have mutated functions, weird fighting abilities, shocking strength and wisdom, and even have commanders. The most important thing is that it requires me to change the fate of a large number of characters and events, and calls it the "Butterfly System". In this way, I took my wife and embarked on the road to find the truth in this fantasy and terrifying world...