Chapter 1: The history and future of XR- 1.1 XR: From early experiments to the fourth transformation- 1.2 VR: A rollercoaster ride into the future- 1.3 AR: Handheld AR success stories, prototypes and the AR cloud- 1.4 A new era of XR gamification: UX and user engagementChapter 2: The rise of UX and how it drives XR user adoption- 2.1 UX and the macroeconomics of the next big thing- 2.2 Key lessons from three decades of VR experiences- 2.3 User agency and storytelling- 2.4 HCI, usability and UXChapter 3: UX and experience design: From screen to space- 3.1 Creative solutions for the XR friction funnel- 3.2 The fundamentals of designing spatial experiences- 3.3 Immersive interaction: Senses, haptics, gestures, audio and voice- 3.4 XR and mindful designChapter 4: Pioneering platforms and UX learnings- 4.1 Handheld AR breakthroughs- 4.2 VR: The Oculus ecosystem- 4.3 Magic Leap and Microsoft Hololens: Entertain, inform, assist and inspire- 4.4 VR, AR, MR: The evolution of prototypesChapter 5: Practical approaches: XR UX in the real world- 5.1 Tools and techniques for prototyping- 5.2 Narrative mechanics, UI, 3D personas and story flow- 5.3 UX Strategy, analytics and data acquisition- 5.4 Effective UX audits for XR projects