Portal Fantasy sci-fi books

THE SPACE TRILOGY - Out of the Silent Planet, Perelandra & That Hideous Strength

Rune Seeker

Singularity

Forge Master

Torith

Children of Memory

System Change

Falling with Folded Wings: A LitRPG Progression Fantasy

The Kaiju Preservation Society

He Who Fights with Monsters 3

Gods and Men (Ruins of the Earth Series Book 2)

Ruins of the Earth (Ruins of the Earth Series Book 1)

Passages

The Ice Fortress

Tales of Anyar

Life Reset

Heavier Than a Mountain

Guardian

Impact! (an Ell Donsaii Story #12)

The Collected Stories of Arthur C. Clarke

The Hitch Hiker's Guide to the Galaxy -- A Trilogy in Five Parts

The Hitchhiker's Guide to the Galaxy

Exploration

The Primal Hunter: A LitRPG Adventure

He Who Fights with Monsters: A LitRPG Adventure

Station Cores Complete Compilation: A Dungeon Core Epic Books 1 through 5

Cosmic Games

The Sorcerer: A Portal Progression Fantasy Series

Dream Girl: A Why Choose Omegaverse Fated Mates Romance

The Alchemist: A Portal Progression Fantasy Series