
Preface is an immersive tech demo showcasing Melba, PLAYERUNKNOWN Productions' groundbreaking technology generating an Earth-scale world. In this project still in development, experience our machine learning agents creating a planet in real-time, directly on your GPU.
Revenue comes from in-game items and microtransactions, which our price-based model doesn't estimate. Copies below reflect the player base, not paid sales.
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About
Explore a World in the Making
Preface is an immersive tech demo showcasing Melba, PLAYERUNKNOWN Productions' groundbreaking technology generating an Earth-scale world. In this project still in development, experience our Machine Learning agents creating a dynamic planet in real-time, all processed directly on your GPU - with no reliance on cloud services.
A Development Journey
Join us on a journey into the future of world-building. Preface gives you the opportunity to explore a vast Earth-scale world spanning 510 million km² (200 million square miles) and be among the first to witness this new technology, as it takes shape. As we continue to build and refine Melba, your experiences and feedback will play a crucial role.
Your Feedback, Our Path Forward
We believe in community-driven development. That's why we invite you to join us on Discord, where you can engage directly with our dev team, share ideas, provide feedback, and stay informed on the latest updates.
Preface is a tech demo - not a finished product. We’re in an ongoing development phase, so check back regularly to see new features and enhancements as we continue to push the boundaries of ML-driven world generation.

Genres
Stats
Languages: English
Engagement
Reviews
Themes across 40 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
Not sure even where to begin. this game is going to rewrite gaming history..... Absolutely jaw dropped
This is a procedural environment walking simulator. All you have to, just run and run. It's a way too limited when it comes to explore. Maybe because it's in demo!
I've played better "tech demos" from a jampack disc back on the ps2.
Related
Related
Trends
Concurrent players on Steam, sampled daily since tracking started.
Hours played at review time, across 40 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
[quote][url=https://en.wikipedia.org/wiki/AI_slop][b]Warning: AI Slop[/b][/url] This game is partially or completely made with talentless, soulless AI generated content.[/quote] This isn't a game, doesn't have gameplay loops. It's a software application. "Preface: Undiscovered World" lacks the basic mechanics that make something a game. Lacking that, this is just an application that abuses Steam's "games" section so the developers can publish an AI slop generator which they intend to charge money for. It's not a game. It just procedurally generates a planet that looks bad because it's disgusting AI slop. To clarify why this isn't a game in more precise terms, a "game loop" is the core cycle of interaction and feedback between a player and the game itself. Here's an example of a game loop. In Dark Souls, you explore an area, encounter an enemy, fight that enemy and if the computer lets you survive, you repeat that loop with the computer providing you with new enemies. Another example is Candy Crush (while mobile games are awful, they are still games where this isn't), where you rearrange your gems and if you create a match, they're eliminated, you get rewarded, and then the game provides you with more gems to match to repeat the process. You won't find any of those kinds of loops or any real gamelike feedback here. It is impossible to "play" this because it isn't a game. This has misleadingly been launched in the "Games" section of Steam instead of the "Software" section. This is a common mistake for developers who are new to Steam, or don't understand the difference between games and software which isn't a game. It seems this software published incorrectly as a game is simply lack of experience/knowledge of the correct process. The correct process for publishing non-game software is found here: [url=https://help.steampowered.com/en/wizard/HelpWithPublishing?issueid=925]Steam Developer Help With Software Publishing[/url] Because the developer didn't bother doing the right thing, we now have a non-game software app in entirely the wrong place. When developers publish things that obviously are not games as if they are games, it pollutes the marketplace and makes it harder to find real, genuinely made games from game developers who did the right thing. This kind of store pollution makes it harder for gamers to find those genuinely games. It's bad for everyone. There are no gameplay loops in this software, no "gameplay", no meaningful game like interaction. It's a software application and as such has no merits as a video game for gamers. Because of this, I cannot recommend this non-game software as a game to gamers.
Is big, runs ok, does everything a tech demo should. Every rock is butt rock A+
Mind-blowing.
thought it was a horror game
It's a tech demo to test How long you want to hold the W key
her taraf bembeyaz oynanmıyo
Actually pretty cool. I modded it so that I could run way faster and it... was a realistic randomly generated 'earth' if you will in terms of which type of terrain I moved through in which sequence and for how long. It's obviously a tech demo so some things like all the rocks and trees looking the same need to be overlooked for right now. The one thing I found interesting was that I started where a lot of other folks saved their games but I did not see any other markers from other's saved games any where else in this tech preview. I thought we were all supposed to start in random placed but I guess that is not the case. It would be cool to access other people's saved games from the menu in this tech preview so that you could see other terrain types that might be on the other side of the world from where you started. I think this could be cool, it's like what Bethesda wish they could have done in the 90's. Maybe technology is there now to have an open world MMO shooter (please offer third person if possible ;-), which would be truly a first and an innovation.
Audience
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.