Cataclysm Game: My Shelter Is Very Thoughtful!

"Welcome to Cataclysm Game!" "Dear players, each of you will have a shelter, a scientific research base, and one hundred points!" "Use points to make weapons in the scientific research base, go to the zombie-infested world outside to obtain supplies, and try to survive!" "Note, this is not a game! This is not a game! This is not a game!" … When he woke up, Chen Nuo traveled to the disaster game world! However, before he could sort out the valid information, there were violent knocking sounds coming from outside his shelter! The zombies are coming! Fortunately, just as the iron door of the shelter was about to be breached by zombies, a prompt sounded suddenly: "Ding, you disliked the iron door of your shelter. He felt very shameless, so he broke the limit and evolved into a nano-iron door!"