An unlikely victory over Sitting Bull at Little Big Horn propels General George Armstrong Custer to the White House. Now he’s fixed on Spain’s decaying empire as his source for immortality. And when a group of Americans on board a ship headed for Cuba is massacred, war is brewing. Now the president is set to attack along the road to becoming the American Caesar—that is, unless calmer heads can prevail against the hurricane that is George Armstrong Custer.

Get 1882: Custer in Chains here.

Ten soldiers thrown back in time to the Paleolithic Era find themselves outnumbered by travelers from across Earth’s history. With no idea how they got there or how to get back, they must now learn to survive in a hostile world as dangerous as any battlefield. A gritty tale of survival that may lead to triumph in a Paleolithic world that seems to want men dead.

Get A Long Time Until Now here.

A monstrous killer is defeated and a conspiracy stands exposed. But Kyri Vantage knows her job is far from done, for a dark power stirs. Now, Kyri and her companions must venture into Moonshade Hollow, a place from which none have ever returned. There awaits a stunning revelation that challenges everything they believe.

Get Phoenix in Shadow here.

In Michael Z. Williamson’s new novel, A Long Time Until Now, a convoy of American soldiers is tossed back in time to the Paleolithic Era. All they have is the clothes on their backs and whatever gear was in their Humvees. Which got us thinking, if you were transported through time to the Stone Age, what five items would you bring along and why? Tell us for your chance to win a signed copy of A Long Time Until Now.

Find out more here.

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Last month we asked you to tell us what would be the worst piece of Earth software an intelligent extraterrestrial species could come into contact with and why. We got a lot of great responses—so many that we’re printing many of them. But there can be only one winner. Congrats, Zeppy Cheng! You’ll receive a signed copy of Travis S. Taylor’s Trail of Evil. Read the winning entry, and a sample of runners-up here.