Top personal favorite 200k+ on FimFic.

Stories in Stone, Luna's Royal Guard. The Gardens of Canterlot contain more than their fair share of stories. And more creatures than just Discord. by TDR 628,784 words · 773 · 49
Past Sins Can Nightmare Moon, reborn without her hate, ever escape her past? by Pen Stroke 201,810 words · 12,381 · 379
Dusk's Dangerous Game When gods play games, we are but pawns. by Airstream 231,581 words · 1,214 · 40
For Want of a Dawn Sometimes, in order to discover one's own self, they must venture into the depths of hell. by Ciroton 225,592 words · 794 · 31

My tops allow one entry per. If any part of a story makes it to the top it is assumed that all squeals, prequels and alternate endings, ETC are all placed with it. In #1 is, Stories in Stone. In #2 is, The Immortal Game. In #3 is, Past Sins. In #4 is, Dusk's Dangerous Game. In #5 is, For Want of a Dawn

100k and lower.

Hard Reset Twilight gives her life to stop a changeling invasion. Repeatedly. by Eakin 36,358 words · 8,069 · 134
Is Immortality Really Worth It? Twilight is rejected by the Princess, and vows to become stronger, more perfect, to surpass Celestia by Nadake 79,831 words · 880 · 85
On a Cross and Arrow Twilight and her five friends are transported across dimensions to... Ponyville, Equestria? But not the same one they knew. by Conner Cogwork 86,362 words · 4,456 · 101
Daylight Burning The return of an ancient enemy draws the ponies into a deadly spy game. by Guesswork 71,200 words · 735 · 33

In #1 is Hard reset. All of his works are amazing. In #2 is Is Immortality Really Worth It? In #3 is Twilight Sparkle and the Spartan Stallion. In #4 is On a Cross and Arrow. In #5 is Daylight Burning.

Top Favourites 100k-200k

The Empty Room An ancient enemy; a family secret; a plot to overthrow the Princesses... by Wanderer D 150,930 words · 1,866 · 69
Succession Twilight awakens in a world beset by eternal night, caused by the death of Princess Celestia and Luna and the destruction of the Canterlot palace. Can Twilight bring back the sun, save Equestria, and bring history's most vicious murderer to just by Helrael 190,046 words · 372 · 23

My tops allow one entry per. If any part of a story makes it to the top it is assumed that all squeals, prequels and alternate endings, ETC are all placed with it. In #1 is, The Empty Room. In #2 is the hidden gem know as, Eyes Without a Face. In #3 is another hidden gem, Succession. In #4 is the ultra dark but well done, Grimoire. In #5 is, The Games We Play.