MTL - The Rise Of The Tamer Family - ~ Guys, the computer is blue screen again

The world had changed when the System arrived, alongside the Cataclysm that filled the world with monsters. The technology was gone, replaced by classes and skills that allowed the people to fight back. When Devon ended up as a Blacksmith, a class that didn’t grant Intelligence, he had to face the reality, that his old career that he loved - mathematical sociologist - was over. Instead, he had ended up as yet another discarded member of the production class, overshadowed by the existence of the System Shops to the point of total marginalization. But, what if all he needed was to reapply his scientific thinking to the System...

The girl who transmigrated threw four-year-old Yu into a snowy mountain in order to change her fate. Fortunately, kind-hearted people took the young girl in. The Wang family was poor, sick, disabled and indebted, But from start to end, they pampered her like a precious jewel. Everyone said that the Wang family picked up a money-losing burden. Sooner or later, they would all end up badly together! Unexpectedly, this little precious doll was a small blessing. Little Yu took out her little pocket and smiled sweetly. Portable spatial pocket, the best spiritual spring, spiritual measurement mouse…

Anything they wanted, Yu had it! An eye for an eye, a tooth for a tooth. This small blessing was incredible. Not only was she a farming expert, but she was also great at business. She even opened a school, sea trade, established a prestigious kindergarten, and even gained the favor of all the staff! Watch as the small, pampered blessing turns the table around and brings her family to the pinnacle of life! The transmigrated girl and the villains were dumbfounded. It looks like they were the ones who missed out on getting the person with a cheat!

Let’s fight! Go! Who am I afraid of with a chip that turns into a brain cell? ! Get promoted and get rich! The nest treasures are all mine!

- Description from novelbuddy

Billions of Humans transmigrated to another dimension, each became a Land Ruler at the start and owned a castle. Each Land Ruler would draw a random starting Soldier-type Building, used to arm their castles. Recruit more soldier-types, plunder resources, and dominate the world! Some drew the Sacred Palace of Knights from the start and commanded troops of knights to crush all obstacles in its way, ruling over vast lands. Some drew the Goblin Cave, developed castle trade, and became renowned dirty profiteers. Of course, more people only drew the most unremarkable soldier-types: Goblins, Lizard Man, Skeleton Soldiers…… These people could only kneel before the powerful Land Rulers and serve them as slaves. But Mike was an exception. His starter soldier-type building was, Dragon Nest! Glacial Dragon, Hellfire Dragon, Undead Dragon, Black Dragon…... When one after another dragon egg appeared before Mike, he suddenly felt that…...conquering the World seemed quite manageable?