PCGame

Preface: Undiscovered World

World-generation tech demo with an Earth-scale landscape to explore

PLAYERUNKNOWN Productions · Released Dec 5, 2024 · Early Access

CasualFree To PlayGame Development

AI-generated content disclosed

Reviews
Mixed
44% of 89
Recent reviews
Not enough recent
Players
0
daily peak, Oct 28, 2026
Steam Deck
Unsupported
Last update on Steam
4 months ago
Jun 26, 2026
Minimum PC
RX 6600
16 GB RAM · 10 GB disk
Full requirements

What is Preface: Undiscovered World?

This free, single-player Early Access tech demo lets you explore a world generated in real time by machine learning running on your GPU, without cloud processing.

For you if...

  • +you are curious about experimental world-generation technology

Not for you if...

  • −you prefer compact environments you can explore quickly

What players say

44% of 89 reviews are positive

Players praise the scale of the generated world. Complaints center on the lack of gameplay beyond roaming, with some also finding the scenery repetitive.

Screenshots and trailer

Preface: Undiscovered World screenshot 1

Preface: Undiscovered World system requirements

Minimum: RX 6600, 16 GB RAM, 10 GB of disk space.

As published by the developer.

Can my PC run Preface: Undiscovered World?

Tell us your graphics card once and every game page will answer this for you.

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Minimum

OS
windows 10
Processor
6-core/12-thread CPU with AVX2 support - AMD Ryzen 5 3600 / Intel i5 10500
Graphics
GPU with Sampler Feedback and Mesh Shaders - AMD RX 6600 / NVIDIA RTX 2060
Memory
16 GB RAM
Storage
10 GB available space
DirectX
Version 12

Recommended

OS
windows 10
Processor
8-core/16-thread CPU - AMD Ryzen 7 3700X / Intel i7 10700F
Graphics
GPU with 8GB VRAM - AMD RX 6800 XT / NVIDIA RTX 2080 Ti
Memory
16 GB RAM
Storage
10 GB available space
DirectX
Version 12

Does Preface: Undiscovered World have co-op or multiplayer?

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

Does Preface: Undiscovered World 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
Text only: English.

Does Preface: Undiscovered World use AI-generated content?

Yes. The developers disclose AI-generated content on the game's Steam page:

Terrain textures, elevations and biomes in game are ML generated. Most of the work on the terrain also uses machine learning techniques both offline (pre rendered) and at runtime. We train our own models with our own sourced data, and it is rigorously vetted for legal concerns.

The statement mentions: AI active during playArt

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

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