Pyramid Scheme is another humorous science fiction novel from the authors of Rats, Bats, and Vats and The Rats, The Bats, & The Ugly.
An alien probe, in the shape of a pyramid, lands in Chicago and starts growing rapidly. It captures some of the people in the vicinity and sends them into an alternate universe, where most of them die within hours. A handful survive and start to thrive. The new universe contains the Greek and Egyptian gods and characters from Greek mythology, including the ever-untrustworthy Odysseus.
The plot is too silly to explain further, but it’s an enjoyable romp, as the core characters triumph over the odds.