What If I Could Enter a Game World?

He transmigrates to a wasteland era and gains the ability to enter game worlds. Complete missions, and he can bring all sorts of items back with him. In a bridge-building game, he pockets all the project resources for himself. In a thief simulator, he becomes a master thief who leaves nothing behind wherever he goes, not even a scrap of land. In a doomsday-preparation game, he builds a rocket by hand. Zombie extermination plan? No, zombie labor-reform program! By acquiring items and technology in all kinds of games, he sets out to build the strongest city in the real world!