Sequential Highway: My Space Can Be Upgraded Infinitely

Blah-blah-" "Attention, attention! Attention all surviving fellow humans! " "Since the fall of the capital, our country's 34th large city has been completely invaded by strange creatures three hours ago..." "Repeat, it has fallen, it has all fallen! " "All routes leading here have been blocked, and no survivors are allowed to approach! " The announcer's voice suddenly stopped, and screams came faintly from the radio. "Everyone, this may be the last time I report to the outside world. " "Weird has broken through the last defense, and we... Can't hold it anymore. "