Based on your request to download the 'Book of Yog Idle RPG' for free, I found that it's available to download from GameLoop, a popular platform for playing Steam games on PC.

Here is the relevant information:

* The Book of Yog Idle RPG is a 3D idle RPG game presented with a Cel-Shading art style.

* It features dozens of heroes, hundreds of skills, and thousands of loot items that can be combined freely.

* Players can rally heroes, develop their kingdom, and explore the secrets of a lost world.

To download the game for free from GameLoop, you can follow these steps:

1. Go to the GameLoop website ('www.gameloft.com'(http://www.gameloft.com)) or click on this link: 'https://gameloft.com/en/download-game-loop'(https://gameloft.com/en/download-game-loop)

2. Click on the 'Download' button to download the GameLoop installer.

3. Install GameLoop and sign in with your Steam account.

4. Search for 'Book of Yog Idle RPG' in the GameLoop library.

5. Click on the game's title to open its page, then click on the 'Download' button to start downloading the game.

Please note that you need a Steam account to play the game, and you'll need to log in with your Steam credentials when you launch the game through GameLoop.

Additionally, I found the same information available in Vietnamese:

* The Book of Yog l game nhp vai 3D nhn ri nhn mnh vo k nng Cel-Shading. Chiu m cc anh hng, pht trin vng quc v khm ph b mt v th gii mt. Khm ph k nng, ti nng v sc mnh ca mi anh hng trong game RPG Book of Yog.

I hope this helps! Let me know if you have any further questions or need assistance with downloading the game.

Download Book of Yog Idle RPG free