One Late Night: Deadline

First-person horror mystery about investigating paranormal events in an office

Black Curtain Studio · Released Dec 22, 2014

Reviews: Mostly Negative; 29% of 238
Recent reviews: Not enough recent
Players: 0; daily peak, Oct 31, 2026
Steam Deck: Unsupported
Last update on Steam: 11 years ago; Mar 6, 2015
Minimum PC: DirectX 9 GPU; 4 GB RAM · 1.2 GB disk; Full requirements

What is One Late Night: Deadline?

In this free-to-play, single-player horror adventure, you investigate paranormal activity as an office worker arriving at work late at night. You explore a five-story office building in first person, reading newspapers and hacking coworkers' emails for clues while completing objectives that aren't strictly linear. Your cellphone provides light and access to a parallel dimension.

For you if...

+you like supernatural horror in familiar, everyday settings

Not for you if...

−you want a strictly linear sequence of objectives

What players say

29% of 238 reviews are positive

Players repeatedly criticize poor performance and bugs. Other recurring complaints include unclear objectives and difficulty figuring out where to go.

Screenshots and trailer

One Late Night: Deadline system requirements

Minimum: DirectX 9 GPU, 4 GB RAM, 1.2 GB of disk space.

As published by the developer.

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Minimum

OS: Windows XP / Vista / 7 / 8
Processor: Intel Core 2 Duo or AMD equivalent
Graphics: DirectX9c compliant card with at least 1024MB of VRAM
Memory: 4 GB RAM
Storage: 1250 MB available space
DirectX: Version 9.0
Notes: Rquirements are based on desktop hardware. Some AMD based hardware may experience lesser performance.

OS: Windows 7 SP1 64-bits
Processor: Intel Core 2 Quad or AMD equivalent
Graphics: DirectX9c compliant card with at least 2048MB of VRAM
Memory: 8 GB RAM
Storage: 1250 MB available space
DirectX: Version 9.0c
Notes: Rquirements are based on desktop hardware. Some AMD based hardware may experience lesser performance.

Does One Late Night: Deadline have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Single-player

Does One Late Night: Deadline run on Steam Deck?

Unsupported No: Valve rates it Unsupported on Steam Deck.

Graphics settings cannot be configured to run well on Steam Deck

PC version details

DRM: None declared on Steam
Controller: Keyboard and mouse
Platforms: Windows
Steam features: Family Sharing
Languages: Full audio: English.

Does One Late Night: Deadline use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 27, 2026. How to filter AI games on Steam