This list is specifically for second chances/age regression in fantasy, historical or VRMMO settings. 
- Not transmigration stories (see: https://www.novelupdates.com/viewlist/16246/)
- Not time loop stories (see: https://www.novelupdates.com/viewlist/10681/)
- Not second chances in modern society (see:  https://www.novelupdates.com/viewlist/10745/)... more>>

I'll start with a big recommendation for:
1. Metaworld chronicles - wonderful series with well developed characters, magic, monsters and dragons, all set to a really well explored alternate modern Earth fuelled by magi-tech. It's the best in the genre and you should try it out!
2. Selena's Reign - only around 20 chapters out so far, but they're really well done. Beautiful descriptions (though sometimes a bit verbose) and the best depictions of a late 18th century setting that I've seen in an online fantasy. Read this for the magical second chance messiah in a gritty, Louis XIV->Napoleon type time frame world.
3. The Calamity of a Reborn Witch - more of a shoujo take on things, it's filled with political plots and conspiracies of a cinderella type heroine in a rather dark fantasy world
4. Forgotten Conqueror (this was on hiatus for a long time but restarted on the author's site) <<less

Don't expect many harems with characters who can't think for themselves or fall in love with the MC before page 1. Many might have a slow moving plot... have to invest yourself into the characters to find the tragic, beautiful and poignant!... more>>

First, some English original webnovels that are superb and easily googleable (in order of best characters, not necessarily plot): 
1. Trailer tr*sh
2. Iron Teeth
3. Castle Kingside (rewrite)
4. Metaworld Chronicles
5. The Good Student
6. Worm (Parahumans)
7. AnimeCon Harem (18+)
8. Mother of Learning
9. Selena's Reign
10. Double Blind: A modern litRPG
11. Tidal Lock (unfinished)

Note that I've been recently pruning and updating the list to remove some that were just good stories with average characters and move them over to new lists that are top of their genre. You can see all my rec lists at https://www.novelupdates.com/user/10378/tallrice/ <<less

[Ranked based on Number of Readers] Included Tags: Royalty/Historical/Adventure/Fantasy

Korean Novels about People experiencing game systems and dungeons in fantasy worlds. People who are born in the fantasy world, summoned, transported or have been reborn into someone in that world.... more>>

* I have broken up the list of dungeons in modern society vs. dungeons in fantasy worlds* <<less

Action, Adventure and Advance. The triple AAA that the following novels have in my opinion^^.Irregular updates but you are welcome to recomend and I will... more>> add them if they pass? <<less

It can be the way it was written, the twist at the end or just the overall mood of the story.... more>>

The plot can be anything, from old cultivation, reincarnation in the magic world to the mecha battle in the distant future and space. The rating doesn't have to be high.

It's just...when you read it there seems to be something that made you want to keep reading.

It's that kind of novel..? <<less