Free Book Giveaways for June 2025: Must-Grab Thrilling Adventures & More

Love free ebooks? 📚 You’re in for a treat! 🙌 I’ve teamed up with talented authors to bring you 15 amazing free book giveaways for June 2025, bursting with free reads across sci-fi, fantasy, mystery, thriller, historical fiction, humor, horror, and more. Each promo, hosted by BookFunnel, requires a quick newsletter signup to unlock your free books—perfect for discovering new authors and growing your library. From Mars colonies to Cold War conspiracies, forbidden libraries, high-society heists, and laugh-out-loud tales, there’s something for every reader. Check out these awesome giveaways below, and share this post with fellow book lovers on X! #FreeBooks #BookGiveaway

Explore the Giveaways

• Free Fantasy & Science Fiction
• Cozy Mystery, Thriller, Suspense
• Crime in the Summer
• Fantastic Heroines
• American Historical Fiction
• FREE Adventures in Sci-fi & Fantasy
• Laughs, Love, and Literary Fun
• Crime Fiction’s Fierce Femmes
• Historical Fiction in June
• Suspense/Mystery
• Future Crime in June of 2025
• Mystery, Thrillers and Suspense Freebies
• Historical Crime and Mystery Giveaway
• Christian Authors SF&F
• Thrilling Crime Stories
• Happy Reading & Contact

Free Fantasy & Science Fiction for June 2025

Genres: Sci-Fi, Fantasy, Space Opera, Epic Fantasy

Description: Blast off or wield magic with 50+ free sci-fi and fantasy ebooks! 🚀 Explore interstellar quests and enchanted realms. Featuring my books The Quantum Signature (by Steven Nimocks), a flash fiction thriller of Mars oxygen theft, The Elusive Isle, The Core Directive, and The Last Librarian (by Lyam Lockwood), a dystopian tale of forbidden books. Available June 1–30, 2025.

Crime in the Summer

Genres: Hardboiled & Noir, Mystery, Thriller

Description: Ready for gritty crime? 🕵️‍♂️ Explore 36 free ebooks filled with noir mysteries and pulse-pounding thrillers. Includes my books The Quantum Signature (by Steven Nimocks), a sci-fi crime flash, Hidden in Plain Hue (by Steven Nimocks), and Thieves in Velvet (by Stella Sinclaire), a gala heist. Available June 1–30, 2025.

Fantastic Heroines: Awesome Women in Fantasy & Science Fiction

Genres: Sci-Fi, Fantasy, Space Opera, Urban Fantasy, Steampunk, Cyberpunk, Horror

Description: Celebrate fierce women! 🗡️ Discover 87 free ebooks showcasing epic heroines. My book The Last Librarian (by Lyam Lockwood) features Maria, a secret keeper of banned books fighting a totalitarian regime. Available June 1–30, 2025.

FREE Adventures in Sci-fi & Fantasy

Genres: Sci-Fi, Fantasy, Space Opera, Epic Fantasy

Description: Embark on epic quests! 🌌 Enjoy 57 free sci-fi and fantasy ebooks. Includes my books Hidden in Plain Hue (by Steven Nimocks), a technothriller with a librarian unraveling a conspiracy, The Elusive Isle, and The Core Directive (by Lyam Lockwood), a genetic thriller with a dystopian twist. Available June 1–30, 2025.

Crime Fiction’s Fierce Femmes

Genres: Hardboiled & Noir, Crime Fiction, Mystery

Description: Meet bold heroines! 🔫 Dive into 18 free ebooks with fierce women solving crimes. Includes my book Hidden in Plain Hue (by Steven Nimocks), a technothriller with a librarian exposing a conspiracy. Available June 1–30, 2025.

Suspense/Mystery

Genres: Mystery & Suspense, Mystery & Suspense / Crime, Mystery & Suspense / Police Procedural

Description: Crave a thrilling mystery? 🔍 Dive into 30 free ebooks packed with suspense, crime, and police procedurals. Includes my books The Quantum Signature (by Steven Nimocks), a flash fiction thriller of Mars oxygen theft, and Thieves in Velvet (by Stella Sinclaire), a high-society heist thriller set at a glamorous gala. Available June 1–30, 2025.

Mystery, Thrillers and Suspense Freebies

Genres: Mystery, Thriller, Suspense

Description: Get gripped by suspense! 🔎 Dive into 35 free ebooks packed with mystery and thrills. Includes my books Desperate Remedies (by Lyam Lockwood), a speculative horror-comedy with a time loop twist, The Core Directive (by Lyam Lockwood), a genetic thriller with a dystopian edge, and Shattered Trust (by Steven Nimocks), a thriller of betrayal and conspiracy. Available June 1–30, 2025.

Christian Authors SF&F

Genres: Fantasy, Science Fiction, Sci-Fi & Fantasy

Description: Explore epic worlds! ✨ Dive into 67 free sci-fi and fantasy ebooks by Christian authors. Includes my books The Quantum Signature (by Steven Nimocks), a flash fiction thriller of Mars oxygen theft, Desperate Remedies (by Lyam Lockwood), a speculative horror-comedy with a time loop twist, The Elusive Isle (by Lyam Lockwood), a quest for an anomalous island, The Core Directive (by Lyam Lockwood), a genetic thriller with a dystopian edge, and The Last Librarian (by Lyam Lockwood), features Maria, a secret keeper of banned books fighting a totalitarian regime. Available May 1–June 15, 2025.

Happy Reading!

Thanks for exploring these free book giveaways for June 2025! 📚 Enjoy your free ebooks, and please leave a comment or rating below to share your thoughts. 🙌 If you have questions or want to connect, reach out via my contact page. Happy reading! ✨