Making Games: What If I Use Some Black Technology?

[Making games + time travel + city + black technology + single female protagonist] Chen Fan accidentally traveled to a parallel world. Just when he was at a loss, the system came. But the system came and went quickly, but fortunately, it left Chen Fan with all its black technology. Chen Fan used the black technology left behind by the system to climb the technology tree and create a real virtual game. While climbing the technology tree, Chen Fan also produced many games. (The games are all semi-original, based on real-world games) [A pure new writer, readers are welcome to come and taste it, and then... Um... Feel free to do so.