This collection groups nineteen of Ellison's stories dealing with subjects such as gods spirits and suchlike. In former times, people created numerous gods and spirits for just about every aspect of their lives. Gods for thunder the moon and the sea. Spirits and Ghosts living in caves, rivers etc. What if we still felt the need to invent and invoke such gods and spirits today? What would they be like? A god for machines? A spirit in a slot machine? A demon ruling over violent crime? These are the subjects that Ellison deals with in this collection of stories.
The book straddles the boundaries between science fiction, fantasy and horror and as such it will not satisfy SF purists but it does contain a number of very powerful stories. The opening tale, "The Whimper of Whipped Dogs" is a shocking and worrying take on the cruelty of city violence. It is followed by "Along the Scenic Route" in which modern day knights in armour fight their jousts to the death on the public highway. Those two, along with "Ernest and the MachineGod", "Basilisk" and "Deathbird" are my favourites but they are not the only stories to leap off the page and grab hold of your imagination. There are some weaker tales here too but they are outnumbered by the good ones.
I'd not recommend this as an introduction to Ellison. The anthology "The Essential Ellison" fills that role perfectly but, if you read and enjoyed that, you will like this book. If you like this book, I'd recommend Ellen Datlow's themed anthology "Alien Sex" though not her rather weak follow up.