Corpse Party: Sweet Sachiko's Hysteric Birthday Bash
Released Apr 2019
Vengeful spirit Sachiko Shinozaki is having a birthday bash, and the lovable cast of damned souls from the Corpse Party series is invited! Join the revelers as they do their best to keep Sachiko happy and survive her twisted games in this midquel to Corpse Party and Corpse Party: Book of Shadows.
85% positive · 216 reviews
Done
All announced content has been released
High confidence
Done
All announced content has been released
High confidence
Where to buy
Steam $19.99
Can't confirm — worth a look
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Evaluation
Corpse Party: Sweet Sachiko's Hysteric Birthday Bash is a self-contained visual novel that launched on April 10, 2019. The store description presents it as a complete, story-driven experience structured around eight main chapters with defined endings — a fully packaged narrative product. There is no DLC listed, no roadmap or post-launch content announcements, no developer communications about future updates, and no signs of a live service or ongoing content cycle. The game was released as a finished product and has remained unchanged since launch. Someone waiting for all content would have been able to play the complete game on its release date.
Evidence
Store description presents a fully self-contained visual novel with eight main chapters, multiple endings, and a defined narrative scope — no mentions of post-launch content, expansions, or updates.
Short description frames the game as a complete midquel with no indication of planned additional content.
Media
Details
Developer
Publisher
XSEED Games
Achievements
19
Platform
Windows
Controller
full support
Steam Deck
Verified
Players
Single-player
About this game
Sachiko Shinozaki, tragically murdered at age 7; such a sweet girl, taken away at such a young and tender age! Sure, she may have reacted by becoming a bloodthirsty, vengeful spirit responsible for the deaths of countless other children, as well as their erasures from history, but everyone knows that in her heart of hearts, she’s just an ordinary, innocent little 7-year-old…right?
Well, no. Because you see, today is her birthday! She’ll be turning…7 again, naturally. But in celebration, she’s decided to grant all her victims 24 hours of amnesty from their suffering by gathering them all together for a…hysteric? birthday bash. There will be party games, entertainment, adventure, and most of all, romance!
Join Sachiko and the lovable cast of damned souls from previous Corpse Party games—along with a few new faces—as they take the very concept of genre and toss it aside. Prepare to experience terror, discomfort, joviality, and confusion in equal measure as Heavenly Host Elementary plays less-than-heavenly host to cooking contests, co-ed mixers, interpretive stage drama, traditional party games, and Lovecraftian horrors alike.
Because you know what they say: Hell hath no fury like a 7-year-old girl bored…
A (surprisingly) canonical “midquel” to Corpse Party and Corpse Party: Book of Shadows, taking place sometime during the course of those games, Corpse Party: Sweet Sachiko’s Hysteric Birthday Bash recounts the bizarre events of vengeful ghost girl Sachiko Shinozaki’s one-of-a-kind birthday party held in the otherworldly school where so many lives have been lost in previous games: Heavenly Host Elementary.
The game plays out as a visual novel, divided into eight main chapters that each detail a different activity or cluster of activities. Player decisions determine which of the game’s endings is attained, with only one true ending from each chapter leading into the next. Surviving to the end will require thinking like Sachiko and making the choices that will please her the most…but with the fewest casualties.
Dark Comedy and Nonstop Fanservice
Put on a play, make a movie, attend a mixer, run a race, cook some curry, and more! Indulge Sachiko’s whims, and see new sides of fan-favorite characters in the process.
28 Endings Later
Player decisions lead to one of 28 endings, including countless bizarre deaths.
Extra Chapter Presented in Traditional Horror Style
Complete the game to unlock a traditionally styled Extra Chapter detailing the tragic backstories of new characters Azusa Takai and Ran Kobayashi.
Japanese Voices Like You’ve Never Heard Them Before
All original actors reprise their roles, but take them to new and unexpected places…
Well, no. Because you see, today is her birthday! She’ll be turning…7 again, naturally. But in celebration, she’s decided to grant all her victims 24 hours of amnesty from their suffering by gathering them all together for a…hysteric? birthday bash. There will be party games, entertainment, adventure, and most of all, romance!
Join Sachiko and the lovable cast of damned souls from previous Corpse Party games—along with a few new faces—as they take the very concept of genre and toss it aside. Prepare to experience terror, discomfort, joviality, and confusion in equal measure as Heavenly Host Elementary plays less-than-heavenly host to cooking contests, co-ed mixers, interpretive stage drama, traditional party games, and Lovecraftian horrors alike.
Because you know what they say: Hell hath no fury like a 7-year-old girl bored…
A (surprisingly) canonical “midquel” to Corpse Party and Corpse Party: Book of Shadows, taking place sometime during the course of those games, Corpse Party: Sweet Sachiko’s Hysteric Birthday Bash recounts the bizarre events of vengeful ghost girl Sachiko Shinozaki’s one-of-a-kind birthday party held in the otherworldly school where so many lives have been lost in previous games: Heavenly Host Elementary.
The game plays out as a visual novel, divided into eight main chapters that each detail a different activity or cluster of activities. Player decisions determine which of the game’s endings is attained, with only one true ending from each chapter leading into the next. Surviving to the end will require thinking like Sachiko and making the choices that will please her the most…but with the fewest casualties.
KEY FEATURES
Dark Comedy and Nonstop Fanservice
Put on a play, make a movie, attend a mixer, run a race, cook some curry, and more! Indulge Sachiko’s whims, and see new sides of fan-favorite characters in the process.
28 Endings Later
Player decisions lead to one of 28 endings, including countless bizarre deaths.
Extra Chapter Presented in Traditional Horror Style
Complete the game to unlock a traditionally styled Extra Chapter detailing the tragic backstories of new characters Azusa Takai and Ran Kobayashi.
Japanese Voices Like You’ve Never Heard Them Before
All original actors reprise their roles, but take them to new and unexpected places…
Are these done yet?
![[TDA02] Muv-Luv Unlimited: THE DAY AFTER - Episode 02 REMASTERED](https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/1342410/f90ab2aebac1d41f8fd172040b6a77f1a31df368/header.jpg?t=1768296255)
Last evaluated Jun 27, 2026
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