The Book of Yog is a 3D idle RPG game presented with a Cel-Shading art style. You can rally heroes, develop the kingdom and explore the secrets of a lost world. Dozens of heroes, hundreds of skills, thousands of loot for you to combine freely. Come to embark on a journey to build the strongest team!
Recent Reviews:
Mostly Positive (707) - 78% of the 707 user reviews in the last 30 days are positive.
All Reviews:
Mostly Positive (1,470) - 74% of the 1,470 user reviews for this game are positive.
Release Date:
Jul 29, 2022

Sign in to add this item to your wishlist, follow it, or mark it as ignored

Early Access Game

Get instant access and start playing; get involved with this game as it develops.

Note: This Early Access game is not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“We want to make an idle game that combines the best features of "Diablo 2” with the idle genre, we hope that players can easily enjoy the fun of adventure, battle, chasing loot, and upgrading their team through our dungeons and wilderness levels.
With the help of the players’ opinions, we hope to figure out what content works and what doesn’t during the game’s development. It is for this reason that we have decided to share our development process with our players.
We look forward to hearing the opinions – positive and negative - from our players. Through communicating directly with our players and taking feedback, you can help us continually improve, iterate, and make the best APRG idle game. Your support will be the biggest drive for us to develop "Book of Yog"!”

Approximately how long will this game be in Early Access?

“The early access version will last for at least a year. Before the official release, we have some ideas about the direction and future content of the game. However, we take player feedback seriously and this will undoubtedly affect the development process.”

How is the full version planned to differ from the Early Access version?

““Book of Yog” will be continuously optimized according to the player's ideas, and the player's suggestions will directly determine the content that will be added in the future.
Currently, confirmed new content and features in the official version:
More monsters and dungeons,
More heroes,
More loot,
More maps,
More mission systems,
Additional features, and enhanced gaming performance.”

What is the current state of the Early Access version?

“EA version is an idle APRG with rich contents.
At present, there are more than 30 heroes, hundreds of equipment, hundreds of levels to explore, a talent system for all the heroes and an equipment modification system. You can freely collect equipment, train heroes, and form your own synergised team through your ideas to start your own personal adventure.
For us, we have worked hard to ensure that we can provide players with a great experience and a sound game system when the EA version was launched. Although a lot of the game content has been developed, there is still a lot of work that needs to be done in order to meet the highest standards we have set for the game and for ourselves.”

Will the game be priced differently during and after Early Access?

“Book of Yog is a free game which includes some micro-transactions. Thank you for your understanding and support.”

How are you planning on involving the Community in your development process?

“We're very keen to hear from you, you are welcome to join our official Discord channel to communicate with us directly, get the latest news about the game and let us know about any of your suggestions.
Read more

Play Book of Yog Idle RPG

Free To Play
See all discussions

Report bugs and leave feedback for this game on the discussion boards

From Game Developers

We are a small indie development team and our aim is to make a content-filled idle character development game.

The early stage of the game is mainly about collecting characters, synergizing skills, getting and improving loot, combining the heroes into a viable team, and obtaining resources. In the future, we hope to add more core gameplay features, with something akin to the construction system of "Ark Survival" (under development).

We obviously can't get to a fully polished and perfect game in such a short period of time, so we have made the conscious decision to keep it free, our hopes being that the players will participate in the updates and improvement of our content.

That being said, there will be a small level of micro-transactions in the game to continue funding the team as we go through the early access phase, and we do hope for your support and understanding.

We are aiming to maintain the rhythm of updating every 2-3 weeks from the onset of our early access, and we hope to steadily add content and support the game for 3 years or even longer. We hope that a steady content update as well as a continuous dialogue with our players will convince you that we are in this for the long haul. As it is only through this can we slowly establish ourselves and gain your trust and support.

Follow Us!

Welcome to follow us to learn the latest progress of Book of Yog:

About This Game

*** For information about current state of the Early Access version, please refer to "From Game Developers" section in this page. ***

Recruit heroes, build a team, and explore an idle ARPG with an in-depth strategic system!

Step up to be the Commander of “Arkrance” Strike Force, recruit the unique heroes of “Black Guard” and form your own team, slay and push back the vicious monsters emanating from the "Black Tide", defend the teetering Arkrance Great Wall, and find out the truth behind these apocalyptic turn of events.

Experience an interesting and relaxing idle RPG. There are heroes, skill tomes and loot that are waiting for you to mix and match into the strongest team with the most powerful heroes in order to overcome any obstacles that are thrown in your way.

Main feature

  • Idle system
Experience an easier idle ARPG! You can progress even when you are offline. No need to waste time in meaningless battles. Facilitate the growth of your team, to enjoy the game at your own pace!

  • Heroes
Dozens of heroes are waiting for you to recruit (30 in early access), and more heroes are waiting to join the game. There are 6 unique classes waiting for you to choose: Warriors, Tanks, Rangers, Assassins, Mages and the Support class. Each class has its own unique and special class system and talent trees. If you like RPGs, this will be right up your alley!

  • Strategy System
Experience the rich in-game strategic system to maximize your potential, customize the items, skills, talents, characters freely to make your own perfect hero!

  • Skill Combination
Each hero has their own unique skill trees and talents, collect special skill tomes to customize your heroes' skill trees. Feel freely to collect, learn and combine. And create a most fun and powerful hero to improve the combat strategy and the fun of the game!

  • Team Formation
Assemble a team with 4 "Black Guards" to fight with you. Different team combinations can activate different unique and powerful synergistic effects. There will be paths to victory even if you decide to have a team of 4 tanks or 4 supports. The choice is up to you!

  • RNG System
Explore the wilderness, battlefields, and dungeons, and slay the monsters to get thousands of unique loot, all of which are randomly generated. Each battle can bring an unexpected reward and experience!

  • Loot System
It’s an idle game for a reason, play at your own pace. There’s no need to invest too much effort, nor is there need to P2W. Whether it is loot, skill tomes, skill materials or even heroes, they can be gained easily through normal gameplay.

  • Sand-box System
You can DIY your own lodgings with the sand-box construction system, enjoy a fun, relaxing and personal game experience! (Under development, not released yet)

And more game contents will be published with our continuously update, please stay tuned!

Mature Content Description

The developers describe the content like this:

Some female characters in the game are slightly exposed

System Requirements

    • OS: Windows 7, Windows 8, Windows 10
    • Processor: Intel Core-i3 or faster processor
    • Memory: 4 GB RAM
    • Graphics: any type
    • DirectX: Version 9.0
    • Storage: 400 MB available space
    • Sound Card: any type
    • OS: Windows 7, Windows 8, Windows 10
    • Processor: Intel Core-i5 or faster processor
    • Memory: 8 GB RAM
    • Graphics: any type
    • DirectX: Version 9.0
    • Storage: 1 GB available space
    • Sound Card: any type

Customer reviews

Review Type

Purchase Type


Date Range
To view reviews within a date range, please click and drag a selection on a graph above or click on a specific bar.

Show graph

Filter reviews by the user's playtime when the review was written:

No minimum to No maximum
Display As:
Show graph
Hide graph
Excluding Off-topic Review Activity
There are no more reviews that match the filters set above
Adjust the filters above to see other reviews
Loading reviews...