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Cerulean Days

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Cerulean Days screenshot 1
Cerulean Days Opening trailerWatch trailer on Steam ↗

Cerulean Days

Cascade of Leaves · Published by NekoNyan Ltd.

Mixed — 63% positive (16 reviews)

Last updated 27 Sept 2026

On a seemingly idyllic island, the Internet is shut down. What will become of those unable to adapt? In 2018, a lethal biological attack claims a significant number of lives. While tragedy occupies people's minds to the brim, a controlling governmental plan is put into effect.

DJCTQ l
-50%

£6.39

£12.79

Lowest price we've ever recorded

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£6.39£12.79

Price history

3 Sept 2026Lowest: £6.39 · Highest: £6.398 Oct 2026

Adventure, Casual · 2023 · More £5 - £15 games

Discover the fate of those left behind on Cerulean Days as you navigate an idyllic yet dangerous island. In 2018, a tragic biological event sets off a chain reaction of government intervention and survival challenges.

About this game

Cerulean Days is the third original visual novel by developer LeafCascade. It had a successful campaign on Kickstarter and is now here on Steam!






2016.
Inre Island.
A seemingly idyllic, modern island in the middle of the Atlantic Ocean. A constant tranquil breeze along a mild climate, and a well-off society embracing a harmonious way of life. Its citizens often refer to the island as their very own miracle, counting themselves lucky to have been born on it. Tourism is hampered despite Inre being a highly desired travel destination, and for good reason. Not only is it a trip only the rich can afford, a rigorous regime means a special visa is required for entry.



2018.
Over the course of six months, a lethal biological attack claims a significant amount of lives. While tragedy occupies people's minds to the brim, a controlling governmental plan is constructed and put into motion. All to prevent such attacks from ever occurring again. In the following years, Inre Island's citizens face unexpected change from their usual ways. On a somber day—damp, dark, and horrifying—the internet is shut down, leaving the island disconnected from the world around it.



2020 - present.
After a long internet-less spring tinged with uncertainty, a new system to replace it with is introduced. A new "internet" along digital setbacks result in major changes to everyday life. Unable to adapt, many find themselves spiritually stuck in a world that no longer exists.
Suddenly, the island appears shrouded in mysteries. The closed hearts are many. A select few want a way out. But most want to reset and forget.
People who never would've met, meet.
People who never would've loved, love.
An island that had never known sadness, knows it now.
Cerulean Days is set in 2020 and follows two outliers of society—mellow Michael and competent Séverine—as they discover the true effects of 2018. Amidst tragedy of lost friends and family, bonds are grown, solace is found, feelings blossom, truth is discovered, and conspiracies are seemingly unraveled.
Hearts in need of mending await you. Welcome to Inre Island.




Séverine - A creative and intelligent girl working as a professional pastry chef in a luxurious mall. Due to strict schooling and an arduous upbringing, she has a habit of setting a high bar for both herself and those around her. She has a bold side to her, but typically only lets it show around people she's comfortable with. Her past is filled with loneliness but found comfort in chatting with like-minded people online. Due to the changes to Inre Island, and their effects on the social landscape, she is put in a position she's unfamiliar with. And she does not like it.



Grace - A kind-hearted and bubbly woman working at Inre City High School. For three years, she was Michael's homeroom teacher. After a tragic personal crisis of Michael's, Grace offers him all the support a grieving one could wish for. Since that day, they've lived in harmony under the same roof. Since that day, they've found solace in each other's company. Since that day, they've been an uncommon "family".



Rose - A cheerful full-time streamer meets an internet-less society. Confusion about life ensues. Her online community – her everything – is forever gone. Rose is lost and knows not how to get out of the pit she has been put in. And her stubbornness makes everything all the more difficult! Will she adapt? Or will she remain stuck, holding onto fragments of her past?

System Requirements

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Minimum

Minimum:
  • OS *: Windows XP or newer
  • Processor: 1.7 GHz or above
  • Memory: 1 GB RAM
  • Graphics: 1GB VRAM
  • Storage: 3 GB available space

Supported Languages

English

Latest news

  • AnnouncementsOfficial

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    IROTORIDORI NO SEKAI HD - THE COLORFUL WORLD IS NOW OFFICIALLY RELEASED ON STEAM! https://store.steampowered.com/app/2591380/Irotoridori_No_Sekai_HD__The_Colorful_World/ Story: Our story follows Kanoue Yuuma, an amnesiac boy with a special power, and Nikaidou Shinku, a translucent girl only visible to Yuuma who gave him that power. With it, he can heal any and all wounds. But it comes at the cost of the memories he's made. He lives a simple life: going to school and being scolded by his childhood friend, Kisaragi Mio, by day, and working with his master, Natsume Suzu, in the evenings. However, whenever he falls asleep, he always sees the same dream... a white world, feathers falling, and a girl calling out for him to save her. The student dormitory his master resides in has a special door in the basement, which connects their world to a myriad of different parallel ones. He travels from world to world, searching for one that resembles the scenery he sees in his dreams, but to no avail. Then, one night, as he's out at night strolling around town, he spots a girl jumping from the lighthouse. Yuuma rushes over and heals her using his power, but after coming to, the girl claims to know him and his power, and asks him much like the voice in his dreams: "Please save me, Kanoue Yuuma." https://clan.cloudflare.steamstatic.com/images/33069582/8d8263be747f7de5135e47b403f9bec8f87a9a69.png Follow us on our social media to get faster information on our upcoming games! TWITTER: https://twitter.com/NekoNyanSoft
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  • Community & EventsOfficial

    IROTORIDORI NO SEKAI - THE COLORFUL WORLD RELEASE DATE AND GIVEAWAY!

    Hey everyone! We are super excited for our first game developed by FAVORITE! IROTORIDORI NO SEKAI - THE COLORFUL WORLD will be released on Friday the 16th of February! Check out the store page and put it on your wishlist! https://store.steampowered.com/app/2591380/Irotoridori_No_Sekai__The_Colorful_World/ To celebrate the upcoming release of "Irotoridori no Sekai: The Colorful World", we're giving away Steam keys! Check out the giveaway here -> https://twitter.com/NekoNyanSoft/status/1756907348512080239 https://clan.akamai.steamstatic.com/images/33069582/8d8263be747f7de5135e47b403f9bec8f87a9a69.png
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  • AnnouncementsOfficial

    SECRET AGENT OUT NOW!

    Secret Agent is now available on Steam! Descendant of ninja lineage, Mikage Jin infiltrates Touka Academy undercover to solve mysterious incidents. With AI partner Momoka, he deepens friendships until an accident exposes his true identity. Can he still complete his mission? https://store.steampowered.com/app/2467540/Secret_Agent/ https://clan.akamai.steamstatic.com/images/33069582/83b85547016fedc3135da1590b751db92035269e.png Follow us on our social media to get faster information on our next upcoming games! TWITTER: https://twitter.com/NekoNyanSoft
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  • AnnouncementsOfficial

    CERULEAN DAYS RELEASED!

    Cerulean Days is now available for purchase on Steam! It's our first time publishing an English original VN and we hope you have a lot of fun with this one! For more information check out the Kickstarter: https://www.kickstarter.com/projects/toneyemedia/cerulean-days-a-visual-novel-welcome-to-inre-island https://store.steampowered.com/app/2316290/Cerulean_Days/ https://clan.cloudflare.steamstatic.com/images/33069582/c25cb3e5dfe1f4940a645a5802fa9ae7d3816aee.jpg Follow us on our social media to get faster information on our next upcoming games! TWITTER: https://twitter.com/NekoNyanSoft
    Read full article on Community Announcements (NekoNyan)
  • AnnouncementsOfficial

    MY KLUTZY CUPID RELEASED!

    My Klutzy Cupid is now available on Steam! Join Tsumugu on his quest to find love with the help of a mysterious "angel of love" and the "Love Note". Can they help him find true love, or will he face eternal impotence!?❤️ Get the game with an 11% discount for a week https://store.steampowered.com/app/2370540/My_Klutzy_Cupid/ https://clan.akamai.steamstatic.com/images/33069582/322b292f740b3148aa8257c699cbdcb87a299135.png Follow us on our social media to get faster information on our next upcoming games! TWITTER: https://twitter.com/NekoNyanSoft
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