Doomsday: Crystal Core Explosion Rate Doubled at the Start

(Also known as "Wheel of Evolution", the winning work of Lenghu essay contest.) [High energy throughout + decisive killing + high-tech martial arts]

The system goes back in time, and Wang Hao, who was backstabbed by his brother, returns to half an hour before the disaster. He is shocked to find that the roulette wheels he encounters are one level higher than others.

He could spin the one-star wheel on the first day, which others could only spin after several weeks.

While others were hiding and hoping for rescue, he could already kill zombies at random;

···

In this life, Wang Hao relies on foresight.

Swear to kill the enemy and make up for the regret!