On June 28, get ready to feel Nightmarish as BloodStream has announced its first vertical series.

The series will mark the streaming app’s first launch into the recent vertical series boom. This is a format meant to view on phones and has reached $8 billion globally thanks to other apps like ReelShort and DramaBox, which features elongated romance and dramas that put together, last about the length of a feature length film. Recently, Sunny Pang delved into that world with his action-filled vertical series The Executioner.

Nightmarish is a psychological-horror anthology engineered for the 9:16 frame, not a widescreen show cropped for mobile, with each episode a self-contained nightmare meant to be watched in order. Standout entries include Sleepyhead, in which a young woman who chases a viral online trend is stalked by a curse she has to pass to someone else before it claims her, and The Mare, where a fresh start curdles as a woman’s nightmares begin leaving real wounds on her body. The series leans into what actually lands on a phone screen, dread, paranoia and a jolt before you can look away, rather than the chases and fight scenes the vertical format tends to strangle.

The series was created by Madison Hoover and Jaime Lucero Jr.

“The micro-drama wave proved audiences will watch a full story one vertical episode at a time. It just hasn’t really scared them yet,” said Shaked Berenson, CEO of Studio Dome, BloodStream’s parent company. “We already stream more than a thousand vertical videos, so this isn’t us chasing a format. Nightmarish is the first show we’ve built to be watched in sequence, and a horror-native platform is exactly where serialized vertical horror should live.”

“Vertical horror only works when every frame is built for the phone in your hand, no wasted seconds, the scare landing before you can look away,” said Hoover. “We shot it that way from the first frame, and BloodStream puts it in front of the genre audience it was made for.”

“Every episode is a complete story with a feature-length world behind it, so the series doubles as a proving ground for ideas that can scale,” added Lucero Jr. “A BloodStream release gives the actors and crew behind them an audience that usually only exists for one weekend on the festival circuit.”

Nightmarish premieres on June 28 exclusively on BloodStream. Click on the image below to subscribe to the service.