3 sources Sep 14 Updated
Cyan Heart Sets October 9 Release For Selfie-Perspective Horror
Solo developer Shoei Sio announced on September 14, 2026 that Cyan Heart will be released on October 9, 2026.
Reporting from 3 sources: 4Gamer.net, Automaton, Game Spark.
Why it matters
Sio is a university student majoring in design whose first Steam release was the 2021 title Tatarian aster, and he has said he kept the selfie camera because he wanted the act of taking selfies to carry meaning in the story.
Key Facts
- Cyan Heart is scheduled for release on October 9, 2026 on PC via Steam.
- Cyan Heart costs 1,300 yen, and a demo version is available on Steam.
- A Nintendo Switch version of Cyan Heart is planned through Wakuwaku Games.
- Developer Shoei Sio announced the Cyan Heart release date on September 14, 2026.
- The protagonist of Cyan Heart is a girl wearing an ushanka who films herself with a recording device called the CSZ8x2.
The game is a horror exploration puzzle adventure played from a selfie perspective: the player controls a girl who films herself continuously with a camera, so her own figure and whatever stands behind her fill the screen while her front stays out of view. A demo is available now on Steam, where the game is priced at 1,300 yen. A Nintendo Switch version is also planned through Wakuwaku Games. The setting is a world once sustained by an energy called Magenta Heart, which mimicked physical phenomena forever, then turned cyan and began turning anything with form cyan as well, driving living things and machines mad. The girl enters an abandoned facility rumored to hold something that stops that erosion and works toward the deepest part.
- Shoei Sio is a university student majoring in design. He released his debut work Tatarian aster on Steam in 2021.
- The protagonist is a girl wearing an ushanka who constantly shows a tense expression, and the game reads the situation from changes in her facial expression. Her name is Sara.
- Camera device is the CSZ8x2. Normally in selfie state, can tilt up or down, and point forward to examine objects or access machines. Accessible targets are marked on screen, and there is a mini-map.
- Wishlist data: In February, Sio reported Steam wishlist registrations exceeded 6,000, with about 75% from overseas.
- Exhibitions: DREAMSCAPE#4 in January and TOKYO INDIE GAMES SUMMIT 2026 in March.
- Worldbuilding detail: The facility's underground residential area plan is called "Beneath Sanctum Project," documented in files dated May 1, 1998. The facility has dark corridors, research equipment, and bright spaces overgrown with plants.
- Companion communication: Voice communication with companions provides hints and is logged on the right side of the screen.
- Demo evolution: Adds a system where the character glances at places she can go or places of interest, and a pin-placement system for automatic movement.
Written with AI by Yomimono from the 3 cited sources below, including Japanese-language reporting where cited. See our editorial policy.
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