Tsukihime

Tsukihime is a visual novel where the story is presented via text that intermittently presents choices for the player to make. These choices influence the story, some in large ways while others in small ones. , where a fourth-wall-breaking version of the character Ciel offers hints on what led to the bad ending. The game is divided into five routes, distributed amongst two scenarios: The Near Side of the Moon (Arcueid and Ciel routes), and the Far Side of the Moon (Akiha, Hisui and Kohaku routes).

Every heroine except Kohaku has two possible endings. When the player has achieved all possible endings, a new epilogue part, entitled Eclipse, is unlocked.

The game's plot follows the perspective of protagonist Shiki Tohno (遠野 志貴, Tōno Shiki), a second-year high school student in the fictional town of Misaki. He suffers a life-threatening injury at a young age. After regaining consciousness, he gains the ability to see "Death lines"—lines by which things, living or not, will eventually break when they die. Due to his injury, Shiki has immense headaches as his mind cannot cope with the sight of death.

Soon after he is given special glasses from Aoko Aozaki that block the sight of these lines. Due to his injury, Shiki is exiled by his father to a branch family of the Tohno household. Eight years later, he returns to accompany his sister after his father died. After moving back, Shiki has trouble adjusting to the old-fashioned lifestyle his sister lives by.

The original story of Tsukihime was based on one of Kinoko Nasu's ideas for a novel. It featured Arcueid as a cold stereotypical vampire that is the complete opposite of her finished incarnation. The basis for Shiki was a middle-aged old, worn-down vampire who says to Arcueid upon her first approach "I have no interest in women I've already killed once." The tone of the story was the complete opposite and only the tagline of "a biting relationship between a murderer who can see death lines and a vampire" remained in the final version.

Upon developing the story for Tsukihime, they pictured Arcueid as a cool and princess-like "Noble Vampire", but thought that it overlapped with Akiha's "Lady" character. All of the heroines spoke politely to the main character, so they figured that the only character who could fit the role of someone who didn't speak politely would be Arcueid. They eventually came up with the idea of a "pure white" vampire that developed her character very differently from the original version. There was originally a planned Satsuki route for the original version, but it was later cut.

Following its release, Tsukihime: A Piece of Blue Glass Moon sold 72,237 units on the Nintendo Switch and 66,171 units on the PlayStation 4, bringing it to a total of 138,408 copies sold at retail; this does not include download sales.

Tsukihime: A Piece of Blue Glass Moon was very well received by English-language media. The narrative, production quality, and localization were all praised by reviewers. and it was (as of July 26, 2024) the highest-rated 2024 game on OpenCritic, with a 90 on Metacritic, indicating "universal acclaim".