What to read after Gam?

Kaska rids himself of Earth, a "hopeless ball of poisoned mud" and its greedy, futile remnants. Secretly he jumps ship from a Corporate Explorer to build a new world of his own on Gam. Abruptly, Kaska is confronted by crystalline aliens with a drama and agenda of their own. Powerful masters of light, spurred by a religion of intellect, their existence defies known science. He joins their frantic mission in pursuit of a catastrophic monster. Through terror and enlightenment, Gam allows its visitors little respite, drawing them within a new illumination beyond their dreams.