Daylight, the procedurally generated first-person horror that relies on your cellphone as a means of light source, has now been officially launched across PC and PlayStation 4.

Daylight is told in the first-person perspective and begins with players regaining consciousness in an abandoned hospital with only a cell phone to use as a source of light. The ominous atmosphere, powered by Unreal Engine 4 gives players the immediate feeling that they need to escape. But since each level is procedurally generated, no clues, haunted corridors, life-saving flares or lurking specter will ever be in the same place twice. Daylight was written by industry veteran Jessica Chobot, who also provides the quavering, terrified voice of the protagonist.

The title is currently on offer for a discounted price of $9.59 for PlayStation Plus subscribers, while non-subscribers will pay $11.99 until May 13th. After that, the game will be available at its normal price of $14.99. "The game deviously analyzes your play style to ensure evil spirits execute maximum fright potential," Hardin wrote. "Even better, the level design changes as well.

"Daylight's variable nature is taken a step further with Twitch users. The game taps into the chat channel of your stream and viewers can type keywords to cue in-game events. For example, typing "meow" into the Twitch chat would make the game generate the sound of a cat. We're not giving out the list of keywords though; you'll have to find those out for yourself."