Screenshots
Watch trailer on Steam ↗The Book Of Hiro - Prologue
MingCang Studio · Published by OKJOY
Mixed — 51% positive (41 reviews)
Last updated 27 Sept 2026
“The Book Of Hiro - Prologue” is a 3D visual puzzle game where players solve challenges and puzzles using illusions and perspective to find the hidden key. The game tells the story of a brave villager named Hiro who was ordered to meet the king and encountered various challenges and puzzles.
Indie, Free To Play, Casual · 2023 · More free games
Explore the enigmatic world of The Book Of Hiro - Prologue, where your perception is key to solving challenges as you guide Hiro. Dive into a casual, indie puzzle experience that blends 3D visuals with strategic thinking.
About this game
“The Book Of Hiro - Prologue” is a 3D visual puzzle game developed by two independent developers. Players help Hero embark on an adventure to the palace, using illusions and perspective to solve puzzles and explore the magical world in this book.
[Innovative Visual Puzzles]
The game features innovative visual puzzles that are imaginative and visually stunning. The innovative visual illusion finding gameplay involves moving the viewing angle, clicking, and other operations to find the hidden “key” pattern in the picture. Each puzzle solved can advance the plot and provide a unique gaming experience and visual impact.
[Vivid 3D Graphics]
The game features a simple and fresh 3D low-poly style that is full of childlike innocence while meticulously depicting the different scenes in the story. The game’s soothing and distant music complements the graphics to create a mysterious visual pop-up book.
[Challenging Gameplay]
The game features shiny gold coins, ordinary keys, hammers, gears, and other objects that are common but difficult to find due to the game’s unusual mechanics. Players must make bold guesses and not be fooled by seemingly unrelated images. They must carefully observe and remember that what they see is not necessarily what they get!
[Intriguing Storyline]
The game features an energetic and art-inspired storybook style. Behind the seemingly ordinary protagonist’s travel story is a hidden plot and an extraordinary experience. The game includes a main storyline and hidden endings waiting for you to explore.
The game is still in the intense development stage. If you have any suggestions, please feel free to join our DISCORD channel for discussion
System Requirements
Will my PC run this? →Minimum
- OS: Windows7
- Processor: i5-3450
- Memory: 4 GB RAM
- Graphics: GTX960
- Storage: 500 MB available space
Supported Languages
*languages with full audio support
Latest news
AnnouncementsOfficial
The 3D puzzle game ‘The Book of Hiro' officially launches today!
Developed by Mingzang Studio and published by OKJOY, the 3D optical illusion puzzle game 'The Book of Hiro' has officially launched on Steam today (September 8th) at 17:00 GMT+8. {STEAM_CLAN_IMAGE}/44426843/62888bb62aa45a0b4dad512035f7feeb4d8fb48b.jpg Steam Store Page： https://store.steampowered.com/app/2533870/_/?utm_source=tonggao&utm_campaign=shoufa Game Introduction: "The Book of Hiro" is a unique 3D optical illusion puzzle game developed by a team of two independent developers. The game unfolds within a magical book where each chapter boasts its own 3D map and distinct set of clues. Players are tasked with assisting Hiro on his adventure to the palace. By leveraging optical illusions and perspectives, navigate tumultuous rivers, search for the Sword of the Brave, and unravel a series of surreal puzzles. Discover and acquire the key to breakthrough and explore the enchanting world within this magical book. Thank you all for your support! If you have any feedback or suggestions for the game, you're welcome to join our group discussion! OKJOY discord: https://discord.gg/qamU99HU7jRead full article on Community Announcements (OKJOY)AnnouncementsOfficial
The Book of Hiro will launch on Steam on September 8th!
The 3D optical illusion puzzle game "The Book of Hiro" will launch on Steam on September 8th! Unlock the intriguing spatial visual puzzles. Developed by Mingzang Studio and published by OKJOY, the 3D optical illusion puzzle game "The Book of Hiro" is set to officially release on the Steam platform at 02:00 on September 8th. The game supports multiple languages, including Simplified Chinese and English. For this release version, we have fixed the bugs reported in the prologue demo and optimized the auto-correction function. The game content will showcase a complete story across 7 chapters, offering everyone a fresh and engaging visual puzzle-solving and narrative experience. Steam Store Page: https://store.steampowered.com/app/2533870/_/ Game Introduction: "The Book of Hiro" is a unique 3D optical illusion puzzle game developed by a team of two independent developers. The game unfolds within a magical book where each chapter boasts its own 3D map and distinct set of clues. Players are tasked with assisting Hiro on his adventure to the palace. By leveraging optical illusions and perspectives, navigate tumultuous rivers, search for the Sword of the Brave, and unravel a series of surreal puzzles. Discover and acquire the key to breakthrough and explore the enchanting world within this magical book. Play the Prologue Demo here: https://store.steampowered.com/app/2533740/_/ The game features innovative visual puzzles that are imaginative and visually stunning. The innovative visual illusion-finding gameplay involves moving the viewing angle, clicking, and other operations to find the hidden “key” pattern in the picture. Each puzzle solved can advance the plot and provide a unique gaming experience and visual impact. {STEAM_CLAN_IMAGE}/44444375/e3c0db760d61bcd51d2f94c330a8f6e81e9f7813.gif The game features a simple and fresh 3D low-poly style that is full of childlike innocence while meticulously depicting the different scenes in the story. The game’s soothing and distant ...Read full article on Community Announcements (OKJOY)AnnouncementsOfficial
【Share & Win】"The Book of Hiro" Prologue - Free Steam DEMO Available Now!
"The Book of Hiro" is a unique 3D perspective-shifting puzzle game developed by Mingzang Studio and published by OKJOY. The game recounts the adventurous tale of the brave villager, Hiro, as he ventures to the palace to meet the king. Players will use orientation changes, visual dislocations, and perspective shifts to piece together specific patterns, unlocking the critical "keys" hidden within the map and solving various spatial riddles. A free demo for the prologue is now available on Steam! Interested players can download and experience it now. Prologue demo play: https://store.steampowered.com/app/2533740/_/ {STEAM_CLAN_IMAGE}/44444375/7b77c5ba3c2b4f07ef04ae988480a59c29af63f5.png We have prepared some benefits for everyone! We encourage all of you to participate! We hope for your continued support for "The Book of Hiro" 【Event Period】 How to participate: Share a screenshot of your playtime for the "The Book of Hiro" demo on the Steam community. ---------------------How to Upload Screenshots--------------------- After capturing a screenshot with your software, click on Community Hub - Artwork - Upload Artwork. Once uploaded, click on the bottom right corner "Upload to Community Hub". Event Duration: Starting today until 12:00, August 28th, 2023.GMT+8 Rewards: 3 players will receive a 5 USD Steam gift card. 【Attention】 1. Each participant can only join the event once. Please avoid multiple posts and comments. No plagiarizing or reposting. Only original content is allowed. 2. The list of winners will be announced within 15 working days after the event concludes. 3. Official staff will distribute the prizes within 30 working days after the winner registration closes. 4. The final interpretation of this event belongs to the OKJOY team. The game is still in its intensive development stage. If you have any suggestions or feedback, you're welcome to comment below and chat for discussions!Read full article on Community Announcements (OKJOY)
