One thing is definite and certain, L. E., Modesitt is a terrifically inventive writer. Hollywood could easily make a sci fi film (with a story for a change) of the TimeGod book. The possibilities of eco devastation and the intervention of god like beings who destroy the bad guys in the universe as well as save others has been around for awhile, yet I still like the notion of super beings giving a helping hand, especially when confronted with world shattering events as presented herein.
The main characters, Sammis in "Time Divers Dawn" and Loki in "Time God" are engaging and sympathetic from the very get go. Because of their personal characteristics the reader is willing to follow their development as they battle themselves and others in an extremely hostile world and evolve from bumbling, ignorant young men into the realization of their power and potential and to root for them as they are manipulated by power drunk colleagues and to watch them evolve into saviors of a sort.
Sammis' eventual mate, Dr. Wryan Relorn is a brilliant scientist and the true architect of change on this fantasy world of Query. She helps Sammis directly and later Loki in an indirect manner to become major league heros and slowly they grasp the realization that they are indeed immortals and (somewhat reluctantly) demi-gods.
Modesitt is quite adept at weaving the strands of ecological development in a technology and resource poor world with the norse mythic themes into a logical and believable venue. He shows how barbaric people truly are by nature, under the veneer of so-called civilized behavior, and that when their chief goal is to destroy every resource they have for whatever motivation, that they also destroy their technology and ability to self sustain. Query is just such a world.
His take on Loki is an especially pleasing presentation as Loki has usually been portrayed in the legends as a totally malign being and troublemaker non pareil. Yes, he is still perceived as that, but Modesitt makes Loki far more sympathetic and heroic then one has been led to believe in other tales. The bad guys in these stories are far closer to the hearth and home which is an added spice to the cosmic stew cooking here. Overall, if you enjoy a very well written sci fi yarn with the added charm of mythical gods and goddesses, then this will be a fun read for you. It was for me.