I’ve done some testing and comparing my results to the scene in the first image and I found out it might have been made just by setting the indirect lighting intensity really high. The problem in my project is that I have very thin walls and making it thicker would mean I would have to recreate the whole map, as it’s made out of several types of chunks that generate in real time (I created it when I was a complete beginner and thought it would be the best method, but now I know that making an algorithm that would generate just walls and not entire chunks would be much better). I’ll try to create a small scene with thicker walls and other improvements and then I’ll decide whether to make the whole map generation again or leave it as it is.