Post-Apocalyptic Tower Defense

Miao S susu had a dream. In it, the apocalypse had arrived and monsters were running rampant. Luckily, humanity could build safety towers, allowing people to cling to life by a thread. After waking, she kept replaying what she had said and done in the dream. The more she went over it, the more she regretted it. Who could have guessed that after waking up again, the apocalypse would really arrive, and people really would be able to build towers? The only problem was that the magnificent, imposing safety tower from her dream was just a thatched hut from the start. Theme: Never give up.