41 characters, locations, and items in this world codex.

Characters

MC — The silent male protagonist of the visual novel, whose perspective the player follows.
Monika — The charismatic president of the Literature Club who becomes self-aware and manipulates the game's reality to be with the player.
Natsuki — A tsundere member of the Literature Club with a love for manga and baking.
Sayori — The protagonist's cheerful but secretly depressed childhood friend who invites him to join the Literature Club.
Yuri — A quiet, intelligent member of the Literature Club with a passion for sophisticated literature and a hidden obsessive streak.

Locations

Classroom 3 — The classroom where the Literature Club meets after school.
Monika's Reality — The empty, persistent classroom after Monika's deletion.
Natsuki's House — Natsuki's home, where she lives with her father.
Protagonist's Bedroom — The protagonist's small, modest bedroom where he wakes up each morning.
Quick Save Menu — The game's save/load interface, which Monika corrupts.
Sayori's House — Sayori's home, where she lives alone.
School Festival Venue — The school grounds during the cultural festival.
School Hallway — The main hallway of the protagonist's high school.
School Rooftop — The accessible rooftop of the school building.
Space Classroom — A glitched, endless void resembling a distorted classroom.
Yuri's House — Yuri's home, where she lives alone.

Items

Broken Piano — The out-of-tune piano in the clubroom that Monika occasionally plays.
Chibi Sprites — Small, cute cartoon versions of the club members.
Cinnamon Bun — A nickname Sayori earns for being sweet and lovable.
Cupcakes — Homemade cupcakes baked by Natsuki for the Literature Club.
Festival Posters — Posters made by the Literature Club to advertise the school festival.
Glitched Character File — A corrupted game file representing a deleted club member.
Glitched Ink Blot — A distorted, spreading stain that appears during Act 2's horror scenes.
Monika's Pen — The pen Monika uses to write in her own notebook.
Monika's Song — The song Monika writes and performs for the player in Act 3.
Natsuki's Father's Magazines — Implied adult magazines that Natsuki's father possesses.
Natsuki's Manga — A shojo manga series that Natsuki is passionate about.
Noose — A rope noose found in Sayori's room.
Pen Bag — A bag containing fancy pens that Yuri brings to the club.
Poem Notebook — A small, plain notebook used by the protagonist to write poems.
Portrait of Markov — A disturbing horror novel that Yuri is reading.
Quick Save — The game's save/load interface, directly acknowledged by Monika.
Sayori's Cookie — A cookie that Sayori tries to give the protagonist in the opening.
Sayori's Rainclouds — Sayori's metaphorical term for her depressive episodes.
School Desk — The standard classroom desk in the Literature Club room.
The Script — The game's underlying code and dialogue, which Monika can see and manipulate.
The Space Room — The endless, black void where Monika speaks to the player in Act 3.
Window — The large window in the Literature Club classroom.
Writing Advice Book — A book Monika recommends to the protagonist for writing poems.
Yuri's Knife — A small, sharp knife that Yuri carries and becomes obsessed with.
Yuri's Perfume — A fragrance that Yuri wears.

View full codex at Simulacra.Ink