Synopsis：In the chaos-ravaged world of “Doom Fortress,” Gage Thorne is reborn with a Rage System fueled by vengeance and raw emotion. Besieged by mutant beasts, brutal gangs, and the powerful Esper Alliance, he transforms a rundown shelter into an unbreakable steel bastion. From E‑tier defenses to nano-grade gear, Gage battles Alpha Zombies, Espers, and the shadows of his past to uncover the secrets of Project Starlight and a military conspiracy. Survival is only the beginning—total domination is his ultimate goal.