- X-Blades (Poradnik do gry)
- X-HERO: Idle Avengers Guide, Tips, Cheats and Strategies
- X-Men Legends II: Rise of Apocalypse (Poradnik do gry)
- X3 Konflikt Terrański (Poradnik do gry)
- Xadrez e Matemática
- Xadrez para todos
- Xbox
- Xbox 360: Questions and Answers
- Xbox 360: Questions and Answers (2020 Edition)
- Xbox One or PS4 [PlayStation 4]: Which New Video Game Console Should You Buy? A Comparison of Xbox 1...
- Xbox One: From the Original Xbox Until Now
- XCOM 2 (Poradnik do gry)
- XCOM 2 Guide - Tips - Tricks - Hints
- XCOM 2 Guide and Walkthrough
- XCOM Chimera Squad
- XCOM Chimera Squad - poradnik do gry
- XCOM Chimera Squad Guide - Tips - Tricks - Hints
- XCOM Chimera Squad Guide and Walkthrough
- XCOM Chimera Squad: Official Game Guide
- XCOM Chimera Squad: Official Updated Guide
- XCOM Enemy Within Official Game Walkthrough - Player’s Edition, Bonuses, and More
- XCOM: Enemy Unknown (Poradnik do gry)
- XCOM: Enemy Unknown Guide and Walkthrough
- Xecball
- Xenoblade Chronicles Definitive Edition Volume 1
- Xenoblade Chronicles Definitive Edition Volume 2
- Xenoblade Chronicles Definitive Edition Volume 1
- Xenoblade Chronicles Definitive Edition Volume 2
- Xenoblade Chronicles Definitive Edition Volume 3
- Xenoblade Chronicles Definitive Edition Volume 4
- Xenoblade Chronicles Definitive Edition Volume 5
- Xenoblade Chronicles Definitive Edition: Latest Official Guide
- Xenoblade Chronicles Definitive Edition: The Complete Guide & Walkthrough
- Xenoblade Chronicles: Definitive Edition (UPDATED) - Official Collector's Edition Guide
- Xenoblade Chronicles: Definitive Edition - Best Seller - Official Complete Updated Guide
- Xenoblade Chronicles: Definitive Edition - Strategy Guide
- Xenoblade Chronicles: Official Guide
- Xenowerk Official Game Walkthrough - Player’s Edition, Bonuses, and More