The Wastes of Keldora by Alex Raizman

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After one too many failed inventions, Julian has hit rock bottom. Summoned to another world where gods and monsters roam, Julian continues his streak of bad luck. Rather than touching the Godcore directly, he let his smartphone absorb it. Now, he's got to figure out how to make the Godcore and his phone work together to help the people who summoned him survive their upcoming annihilation by the mad God of Chains. He's going to have to innovate his way out of his bad luck. Good thing Julian has a plan - he's going to build a factory in a medieval world.

Wrath - Dinosaur Dungeon Book 1 by Alex Raizman

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When dungeon delvers and dinosaurs clash, who can survive? Newborn Dungeon Cores must choose what entity they help contain, and that choice determines what monsters they are able to summon. After being executed for crimes forgotten in death, Tira is given the chance to make that choice. Tira chose Acekorah, the Primeval Terror, a being so dangerous few cores will risk trying to contain it. The danger wasn’t important. Tira remembers dying. If containing Acekorah means Tira will face greater danger, that’s a risk worth taking, because the Primeval Terror walked the world long before the races of Man roamed the earth, and Cores bound to him are able to summon beings from beyond the veil of time. Now, forged in the fires of Tira's wrath, the dinosaurs will walk the world anew.

The Dungeon that Walks Like a Man by Alex Raizman

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It’s not easy being a house that eats people. Zaria was just a normal woman, living a simple life - until demons burst through her door and ate her heart. Reborn from tragedy, Zaria rises from the ashes as a Core, but with a twist. A rare mutation has turned her into a Mutant Core, destined to explode unless she forms a bond with a human witch to become a Striga. Her mutation? Legs. With the power of a full dungeon compressed into a walking house that is her body, Zaria sets out on a journey to find her Striga and avoid detonation. Along the way, she battles demons, builds her dungeon, and feeds her mimic mobs. This is not the life she once knew, but it's the one she's determined to make work, no matter who she has to walk through to get there. This book includes people that get devoured and language your grandmother wouldn't like.