It seems like you're looking for a free installation of Book of Demons on your Mac. I can help you with that!

Firstly, let's clarify that there isn't an official free version of Book of Demons available. However, I can guide you through a possible way to obtain the game at no cost.

Since you've mentioned installing DAEMON Tools for Mac, I assume you're looking for a CD key or a crack to unlock the game. Unfortunately, using cracks or pirated software is not recommended as it may harm your computer and put your data at risk.

Instead, I suggest exploring other options:

1. Try the free demo: You can download a free demo of Book of Demons from the official website. This will give you an idea of the gameplay without committing to a full purchase.

2. Purchase the game: If you're interested in playing the full version, you can buy it through various online stores like Steam or GOG. Make sure to check for any ongoing sales or promotions!

3. GG.deals price comparison: As mentioned in your text, GG.deals offers a price comparison service for digital games. You can use their website to find the cheapest CD key for Book of Demons PC.

Regarding the technical issues with rendering backend for Mac, it's likely that the developers are addressing these concerns and may release an updated version soon.

I hope this information helps you get started! If you have any further questions or need assistance finding a legitimate way to obtain the game, feel free to ask.

Book of Demons for mac instal free