Demon Invasion is high fantasy with magic very much present. It almost had to be with demons as the main characters. Set in the world of his novels this novella serves as back story and world building for the main books but is on itself a good tale and interesting read.
In the 90s and 00s I played a lot of DnD (2nd edition s the best!) and read a lot of Forgotten Realms novels and Ryan's stories evoke that same feeling of escapism and wonder. I like the way he tells a story and I enjoy his characters.
If I had one quibble it isn't about the story which is absolutely fine, it's the cover. It doesn't look consistent with the others in the series and if I weren't familiar with his writing already i wouldn't have gotten it. This is a case where the cover doesn't do justice to the story inside. The cover looks kind of stock and amateurish but the writing isn't at all.
If you want a quick summer read and enjoyed Forgotten Realms type fantasy back in the day I recommend the whole series. (The last book isn't out yet.)
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