From Yen Press:

Keiichi Maebara has just moved to a seemingly peaceful new town. He’s making friends and generally enjoying his life until one day he learns of a grisly murder that took place in the little village. His friends won’t give him any details which only adds to Keiichi’s uneasiness. After learning at the town’s annual festival that a death has occurred on that night every year for the past four years, Keiichi is drawn into a web of intrigue to help unravel the mystery of these murders. Things only get more dangerous when he learns that some of his new friends may be involved!

The story of Higurashi no Naku Koro ni is divided into a total of eight chapters: four "Question" arcs and four "Answer" arcs. Each chapter keeps the same main characters, but ends in a different way. However, each chapter gives valuable answers, hints, and clues to the previous one, while at the same time bringing forth even more mysteries.

The question arcs are:
1. Higurashi no Naku Koro ni - Onikakushi Hen
2. Higurashi no Naku Koro ni - Watanagashi Hen
3. Higurashi no Naku Koro ni - Tatarigoroshi Hen
4. Higurashi no Naku Koro ni - Himatsubushi Hen

The answer arcs are:
5. Higurashi no Naku Koro ni Kai - Meakashi Hen
6. Higurashi no Naku Koro ni Kai - Tsumihoroboshi Hen
7. Higurashi no Naku Koro ni Kai - Minagoroshi Hen
8. Higurashi no Naku Koro ni Kai - Matsuribayashi Hen

The side story arcs are:
- Higurashi no Naku Koro ni - Onisarashi Hen
- Higurashi no Naku Koro ni - Yoigoshi Hen
- Higurashi no Naku Koro ni - Kataribanashi Hen
- Higurashi no Naku Koro ni Kai - Utsutsukowashi Hen
- Higurashi no Naku Koro ni - Kokoro Iyashi Hen
- Higurashi no Naku Koro ni - Hirukowashi Hen
- Higurashi no Naku Koro ni Jan - Tsubamegaeshi Hen
- Higurashi no Naku Koro ni Rei - Saikoroshi Hen

Summer 1983...Hinamizawa is a tranquil village, but its inhabitants have been plagued by strange deaths and unexplained disappearances seemingly every year. Some say it's the terrifying curse of Hinamizawa's legendary deity, Oyashiro-sama, causing victims to be spirited away by monsters, but is this town harboring dark, horrying secrets even more sinister than any supersition or myth?

This chapter is an epilogue of one of the "possible outcomes" of Tsumihoroboshi-hen, in which Rena burned the school and killed Mion and her friends. Many years later, in 2006, the lock has been lifted and a group of five meet by coincidence, one of them claiming to be Mion, and get dragged into the supernatural aspects of the "Village of the Dead".

The story is divided into a total of eight chapters: four "Question" arcs and four "Answer" arcs. Each chapter keeps the same main characters, but ends in a different way. However, each chapter gives valuable answers, hints, and clues to the previous one, while at the same time bringing forth even more mysteries.
The question arcs are: Onikakushi-hen, Watanagashi-hen, Tatarigoroshi-hen and Himatsubushi-hen.
The answer arcs are: Meakashi-hen, Tsumihoroboshi-hen, Minagoroshi-hen and Matsuribayashi-hen.
The side story arcs are: Onisarashi-hen, Yoigoshi-hen, and Utsutsukowashi-hen

Umineko no Naku Koro ni Shi: Forgery of the Purple Logic is a manga-exclusive series by Kurumi Suzuhiro. The story expands on the use of the purple declaration introduced by Bernkastel in Twilight of the Golden Witch. The red truth still applies in this game even though there are lesser than usual games. Knox's rules are stated in red to show that it is valid in this game. The story takes place outside the main story.

(Source: Umineko no Naku Koro ni Wikia)

Beatrice is dead, her soul shattered by Battler at her own request. Though her body sits across the chessboard, she is no more than a husk of the laughing, impulsive witch she once was. Lambdadelta is more than happy to preside over the fifth game, and Bernkastel willingly steps in for Battler as he takes his leave to collect his thoughts. But two witches can cause all manner of mischief when left to their own devices, especially when they care as little for rules as Lambdadelta...

(Source: Yen Press)

Summer 1983...Hinamizawa is a tranquil village, but its inhabitants have been plagued by strange deaths and unexplained disappearances seemingly every year. Some say it's the terrifying curse of Hinamizawa's legendary deity, Oyashiro-sama, causing victims to be spirited away by monsters, but is this town harboring dark, horrying secrets even more sinister than any supersition or myth?

On the surface, Minagoroshi-hen is the solution to Tatarigoroshi-hen; however, it answers most of the major common mysteries of the previous arcs. It is told from the perspective of Rika Furude. Most notably, the true identity of the murderer is finally revealed in Minagoroshi-hen. After Minagoroshi-hen, one more effort is needed to seal the story into a happy ending

Twelve years after her loved ones were brutally murdered at the annual family meeting, Ange Ushiromiya, now eighteen, is the sole heir of the Ushiromiya family. Ostracized by her peers, Ange seeks companionship in the pages of a diary left behind by her cousin, Maria. The diary offers a precious glimpse of Maria's world--her struggles at school, her friendship with stuffed--lion Sakutarou, and her fascination with magic. It's as if the diary contains the last remnants of Ange's dear cousin...and an opportunity for Ange to discover the magic within herself...

(Source: Yen Press)

Summer 1983...Hinamizawa is a tranquil village, but its inhabitants have been plagued by strange deaths and unexplained disappearances seemingly every year. Some say it's the terrifying curse of Hinamizawa's legendary deity, Oyashiro-sama, causing victims to be spirited away by monsters, but is this town harboring dark, horrying secrets even more sinister than any supersition or myth?

Solution to Onikakushi-hen. Unlike Meakashi-hen, Tsumihoroboshi-hen's story is drastically different from the plot of its Question arc. In Tsumihoroboshi-hen, Rena experiences a situation similar to Keiichi's in Onikakushi-hen, as she makes a terrible mistake and becomes distrustful of her former friends. It is the first chapter with a (seemingly) happy ending, although some tips reveal a sinister twist.

The story is divided into a total of eight chapters: four "Question" arcs and four "Answer" arcs. Each chapter keeps the same main characters, but ends in a different way. However, each chapter gives valuable answers, hints, and clues to the previous one, while at the same time bringing forth even more mysteries.
The question arcs are: Onikakushi-hen, Watanagashi-hen, Tatarigoroshi-hen and Himatsubushi-hen.
The answer arcs are: Meakashi-hen, Tsumihoroboshi-hen, Minagoroshi-hen and Matsuribayashi-hen.
The side story arcs are: Onisarashi-hen, Yoigoshi-hen, and Utsutsukowashi-hen

07th Expansion presents. Welcome to Rokkenjima (Six eaves island).

Fall 1986...in Rokkenjima, a private island owned by Kinzou Ushiromiya, eleven of his relatives arrive for a family reunion. He is dying and children want nothing more than to split the wealth he will leave behind. But as a storm traps them on the island, the riddle of Rokkenjima's legendary golden witch begins to take the lives of several people. Who can solve the riddle and gain the gold & the inheritance? Will the golden witch truly revive?

Note: The story is divided into episodes: four "Question" arcs. Each episode keeps the same main characters, but ends in a different way. However, each episode gives valuable answers, hints, and clues to the previous one, while at the same time bringing forth even more mysteries.
The question arcs are: Legend of the golden witch, Turn of the golden witch, Banquet of the golden witch, and Alliance of the golden witch.

The conclusion of the long fought struggle between mystery and fantasy.

From Yen Press:

Keiichi Maebara has just moved to a seemingly peaceful new town. He’s making friends and generally enjoying his life until one day he learns of a grisly murder that took place in the little village. His friends won’t give him any details which only adds to Keiichi’s uneasiness. After learning at the town’s annual festival that a death has occurred on that night every year for the past four years, Keiichi is drawn into a web of intrigue to help unravel the mystery of these murders. Things only get more dangerous when he learns that some of his new friends may be involved!

The story of Higurashi no Naku Koro ni is divided into a total of eight chapters: four "Question" arcs and four "Answer" arcs. Each chapter keeps the same main characters, but ends in a different way. However, each chapter gives valuable answers, hints, and clues to the previous one, while at the same time bringing forth even more mysteries.

The question arcs are:
1. Higurashi no Naku Koro ni - Onikakushi Hen
2. Higurashi no Naku Koro ni - Watanagashi Hen
3. Higurashi no Naku Koro ni - Tatarigoroshi Hen
4. Higurashi no Naku Koro ni - Himatsubushi Hen

The answer arcs are:
5. Higurashi no Naku Koro ni Kai - Meakashi Hen
6. Higurashi no Naku Koro ni Kai - Tsumihoroboshi Hen
7. Higurashi no Naku Koro ni Kai - Minagoroshi Hen
8. Higurashi no Naku Koro ni Kai - Matsuribayashi Hen

The side story arcs are:
- Higurashi no Naku Koro ni - Onisarashi Hen
- Higurashi no Naku Koro ni - Yoigoshi Hen
- Higurashi no Naku Koro ni - Kataribanashi Hen
- Higurashi no Naku Koro ni Kai - Utsutsukowashi Hen
- Higurashi no Naku Koro ni - Kokoro Iyashi Hen
- Higurashi no Naku Koro ni - Hirukowashi Hen
- Higurashi no Naku Koro ni Jan - Tsubamegaeshi Hen
- Higurashi no Naku Koro ni Rei - Saikoroshi Hen

The story is set in a middle school in Shishibone city. Tomohiro Miyajima, the main character of the story, and his group of friends are busy studying for an exam. One day, in search for a thrilling mystery as well as easy money, they take several donation boxes and fabricate a curse to scare everyone: “Ohone-sama’s curse”. After scrawling 骨 (bone) all over the chalkboards and spreading rumors of the curse, the donation boxes are quickly filled and the curse becomes a major legend of the school. Of course, only Tomohiro and his friends knew the curse was fake. It wasn’t possible for anything to happen.

That is, until they receive a donation of 50,000 yen and a letter to go with it, reading: “Please curse Tanashi Miyoko”

Immediately after that letter, bullying and crimes in the school escalated, strange incidents occur, and Tomohiro and his friends are left with a much bigger mystery than they wanted to have, that they are forced to investigate by themselves. What happened shouldn’t have happened. Those who are alive should not be alive, those who know what they know shouldn’t have been able to know, and familiar faces are hardly what they seem, but why? And how?

—Note: The world that this story is set in is the world shown at the end of Higurashi Kai, where Frederica Bernkastel meets Tanashi Miyoko and Miyoko’s parents do not die.

Summer 1983...Hinamizawa is a tranquil village, but its inhabitants have been plagued by strange deaths and unexplained disappearances seemingly every year. Some say it's the terrifying curse of Hinamizawa's legendary deity, Oyashiro-sama, causing victims to be spirited away by monsters, but is this town harboring dark, horrying secrets even more sinister than any supersition or myth?

Solution to Watanagashi-hen. Meakashi-hen consists of the events of Watanagashi-hen told from the perspective of Shion Sonozaki, with only a few minor variations. In this chapter, the audience sees the true reason for the criminal's murderous actions in Watanagashi-hen — a lost love. The first hints of that which ties together the arcs are given.

The story is divided into a total of eight chapters: four "Question" arcs and four "Answer" arcs. Each chapter keeps the same main characters, but ends in a different way. However, each chapter gives valuable answers, hints, and clues to the previous one, while at the same time bringing forth even more mysteries.
The question arcs are: Onikakushi-hen, Watanagashi-hen, Tatarigoroshi-hen and Himatsubushi-hen.
The answer arcs are: Meakashi-hen, Tsumihoroboshi-hen, Minagoroshi-hen and Matsuribayashi-hen.
The side story arcs are: Onisarashi-hen, Yoigoshi-hen, Utsutsukowashi-hen, and Kokoroiyashi-hen.