"Jake’s great-grandfather has died. It blows the family away—especially Jake’s mom. So Jake’s parents decide they should all travel to the great-grandfather’s home to help with any arrangements. In another state. For three or four days. This is a very big problem for Jake’s brother, Tom. He can’t be away from the Yeerk pool for that long. So Tom refuses to go—and his father insists. But Tom’s Yeerk will do anything to survive. Including making his father less of a problem. Mow Jake, the other Animorphs, and Ax have to find a way to protect his father without Tom discovering their secret. And without having to choose between his father’s life. . . and Tom’s."
Age Level: Grades 4-10
004135 
Price: 2.95 USD

"Ax and the Animorphs are about to have a huge problem. It starts when they decide to morph mosquitoes in order to slip by some unsuspecting Yeerks. It ends with them stuck in Zero-space with no idea how they got there, no way to get back to Earth. . . and no oxygen. Luckily, and Andalite scout ship finds them before it’s too late. But now Ax is finally with his own people. And he doesn’t know if he ever wants to go back to Earth."
Age Level: Grades 4-10
006960 
Price: 3.33 USD

"Almost nothing could be as bad as finding out your mother is Visser One. The most powerful of all Vissers. The leader of the Yeerk invasion of Earth. But it happened to Marco. And even though he’s been handling it pretty well, he knew there’d come a time when he’d have to face her again. Knowing that the Yeerk in her brain had taken his mother away. So when Marco, the other Animorphs, and Ax discover that Visser One is overseeing a secret underwater project, they know they have to check it out. But Marco’s not sure if this is a battle he’ll be able to fight."
Age Level: Grades 4-10
002772 
Price: 2.95 USD

"The Yeerks have decided to try a little experiment. They’ve decided that if they can develop a way to make people more ‘willing’ to be infested, they can speed up Earth’s invasion. So, the Yeerks try to invent a substance that will take away the human ability to make a decision. A substance that will eliminate free will. Now the Animorphs and Ax are not only faced with trying to slow down the Yeerks’ invasion, but they also have to put an end to the genetic testing on a small group of humans. This time there’s only one chance to stop the Yeerks. And it anything goes wrong, it’s all over."
Age Level: Grades 4-10
007661 
Price: 3.50 USD

"Jake is just a normal kid. Well, as normal as possible considering he can morph animals, and he's in a war against parasitic aliens. But as unbelievable as it sounds, something even stranger has happened. One morning Jake wakes up, and he's twenty-five years old. Okay. Maybe it's some kind of weird hallucination. Maybe it's a nightmare. Or maybe Jake's just lost it for a while and misplaced a few years. And there's another problem. The world Jake-the kid went to sleep in has changed. It's ruled by the Yeerks. Jake has to find out if the other Animorphs and Ax are still around. Still somehow fighting. Or if he's really on his own."
Est Level: 4th - 10th grades.
006495 
Price: 18.00 USD

"Aldrea, a young member of the outpost the Andalite race has placed on the planet of the Hork-Bajir, must help her native friend Dak when the ruthless, parasitic Yeerks try to enslave his people." Est Level: 4th - 10th grades.
005005 
Price: 6.95 USD

"Tobias, the other Animorphs, and Ax already have a few problems: saving the world, keeping their identities secret, finishing their homework. Now they have one more thing to add to the list. The Yeerks have discovered a way to cause a person to demorph. And with this new device Visser Three plans on capturing 'the Andalite bandits.' Now what? The Animorphs and Ax realize they have to get rid of the device - or be captured by the Yeerks. And the risk of getting caught is very high. That's when Tobias comes up with the only possible plan. Someone has to acquire Ax."
Est Level: 4th - 10th grades
007559 
Price: 3.25 USD

"There is a chance for the free Hork-Bajir on Earth to help start a rebellion against the Yeerks on the Hork-Bajir home world. And they've learned from the last surviving Arn - the race that created the Hork-Bajir - that Aldrea, daughter of Prince Seerow, knew the location of a stolen Yeerk vessel packed with weapons. Unfortunately, the only way to recover the ship is to ask Aldrea herself - and she's dead. But the Arn has Andrea's persona stored. And Cassie, Rachel, or Toby Hamee are the closest match. The only problem is that once Aldrea gets into one of their minds, she may not want to come out."
Age Level: Grades 4-10
006757 
Price: 3.25 USD

"Marco already knows he has a few problems: the constant battle with the Yeerks; finding out his mother was infested. . . and is now Visser One. The leader of the Yeerk invasion of Earth. But things are about to get even weirder. Marco's father is thinking about getting married again. Meanwhile, the Animorphs and Ax have other things to worry about. It seems the Yeerks are trying harder than ever to get people into The Sharing. Now the kids have to find a way to slow down recruitment. But Marco's personal stress is causing him to morph into creatures that don't exist. Creatures the Yeerks are sure to notice. . . and attack."
Est Level: 4th - 10th grades.
007316 
Price: 2.95 USD

"The war between the Yeerks and the Animorphs is still raging. There are no more secrets - but there are plenty of lies. The kids are fighting harder than they ever thought they could. And they're about to make the biggest decision they've ever had to face. A decision that may eventually break them all.
"Ax and the Animorphs have known that the ultimate destruction of the Yeerk pool will give them a huge chance to take back Earth. And they've figured out a way to do it. But there's no way to destroy the pool without destroying everyone else that may be there. And there's no more time to think about it. There's only yes or no . . . "
Age Level: Grades 4-10
007212 
Price: 8.95 USD