Manga with themes like politics, action (specially with levels or other ways that evolves them over time), kingdom building and other situations where you feel like the main character's power is growing. They can get vassals...
Anything with dungeons, towers, magic, regression, rebirth, do-overs, level up system, murim (few), insanely strong men, zombies, etc.
Stories about The Main Character Getting a Second Chance with his Knowledge he starts anew.
This is about manhwa / manhua that has a system an interface like system. This is the order in which I personally rate them.
Story is set on medieval times with swords and magic
Are you like me who thinks that an MC who only use a sword to fight is boring? Yeah, so this list will help you find something different. Expect to see a lot of mage/magician protagonists here.
[Organized in alphabetical order]
To Get Run Over by Truck-kun Is Just Every Persons Biggest Dream! Afterlife, Awakening, Isekai, Lifestyle Change, Otome Game, Past Memories, Person in a Strange World, Reincarnation, Reverse Isekai, Second Chance, Summoned Into...
This list contains Manhwa and Manhua where the MC’s have Game-, Level- or Evolution-like Displays. This includes reincarnated, summoned or VR Game MC‘s.
My comment below will help you understand what this list is about.