The Villainess is Tired of Everything - Chapter 52

Yao Bianliang was an actress in her previous life, and once she entered the shuangwen story of the entertainment circle. The system said: “As long as the host works hard to become cold and become an 18th-line star that no one cares about, she can get a bonus of 100 billion.” Yao Bianliang sat up in shock while saying: “Is there such a good thing?”

- Description from Novelupdates

Luo Yi, a high school dropout in his original world, was isekai’d into the world of the Witcher 3. Starting out as a weak boy named Roy in the village of Kaer, Lower Posada, he was determined to grow stronger, no matter what it took. The first step toward becoming a legend was to kill. And his first kill was… a rooster. ‘You gain 1 EXP.’ Of course, Roy had his own cheat system like all the other isekai protagonists. His first step to becoming a legend started now…

A boy wakes up with omnitrix as a X-GENE

Yang Feng somehow transmigrated into a different world and received a legacy of an ‘ancient high tech’ family, which does not directly raise his power, but gives him the technology to build things which are way more advanced than the seemingly medieval world.