List of favourites based mainly on:

isekai in any form (reincarnation etc.),  game elements, overpowered protagonist, country building and management, army building, modern knowledge in fantasy world and technological gap, crafting .

MC is pretty much always in control, always has a plan and always ends up on top. Or just has plot armor.

I don't exclude harems (even bad ones), if novel is good by itself. 

No yaoi. No pure wuxia or xianxia.

I don't include novels that are too short (less than 20-100 chapters depending on chapter length).

Some of novels may not be available on NU or be incomplete, but they are somewhere in web.

Novels are mainly Korean or Japanese. There are some Chinese novels included but they are either heavily west-influenced or not cultivation oriented. Basically, they are not Chinese-heavy if You know what I mean. The World Online is the only exception, as I simply skipped most of boring chapters.

Novels are kind of sorted best to "worst", though last novels on list my be unsorted at all.