I have a mind which thinks a lot. 
I will use 3 main plots. Transfer to another world. Survival quest adventure. Post apocalypse. 
With 3 main fields- science, magic, cultivation. All will contain them. 

All of the main characters are oop

I will create 3 stories. 

The game- Mark, he is the 
 the apex of all and with a whole race and his harem will continue to capture and rule whole multiverse. 
Transfer to another world. 


Journey- Joel mercury a used to think an orphan is son of the leader of whole intergalactic council. A journey with his wife's to clear all his original race defective creations. 

Pandemic - John an ex super soilders and the only of humanity was left to survive in a apocalypse  with his wife, girlfriends and his  daughter. And he done it quiet good. 

I will write 20 chapters and then rotate them to write one by one. 

All the stories will be around 500 chapters so all of them will take few years so enjoy the journey.