Thorndike Press large print science fiction series

[Berserkers]: Relentless, remorseless, pity less, tireless, adaptive, cunning, self replicating, artificially intelligent, genocidal doomsday weapons of a long forgotten interstellar war between two extraterrestrial races known as the Builders (the Berserker creators) and their enemies the Red Race (both now extinct). Berserkers have only one programmed directive and purpose "Destroy all life." Ranging in size from approximately human (in the case of assassins and spies, which are rare) to minor asteroids (in the case of repair bases) they are typically large and roughly spherical space vessels. If one approaches your planet, MOVE OUT NOW! The only known source of help has been a particularly cunning and vicious race known a Homo Sapiens; who have had some success in defeating the Berserkers, though their results are somewhat mixed and they can betray their own species and become known as "Good Life."

As the "Myth Adventures" continue, Skeeve is now reluctant president of the corporation of work-for-hire magicians.

Money was worthless; it had no value! It couldn't buy housing, clothing, or food. Someone with enormous quantities of cash was buying houses and tearing them down, buying stores and closing them. Perhaps a few people could have stopped the transactions before it was too late. They could have said that Earth was being taken over by alien beings in the shapes of bowling balls, talking dogs, and dolls that walked like men. In fact, they did say it. The trouble was, no one believed them!

Stardrive! Access to the farthest reaches of the Galaxy! Ballantyne created and tested the new engines. Then he returned from the stars ... alone and dying of radiation. Arch Comyn must find out what happened -- and to do that he must make the perilous journey himself, and come face to face with the horrifying secret that awaits mankind.

Prospecting on the moon was grim, dangerous, and usually unrewarding ... only most of the greenhorns who came to try didn't find out until after they got there. Chris Jackson was no exception. He had put everything he owned and could borrow into this, and he'd be ruined if he failed. His only chance meant going into Tycho — where three expeditions had already disappeared. He could try ... but would he come out again?