Collaborative Virtual Environments (CVEs) are online digital places and spaces where we can be in touch, play together and work together, even when we are, geographically speaking, worlds apart. We can hang out, present alternative selves, interact with realistic and fantastic objects and carry out impossible manoeuvres. In CVEs we can share the experience of worlds beyond the physical. This book offers an introduction to up-to-date research in the area of CVE design and development. A reader might feel that, collectively, the chapters in this book beg the questions "What is a CVE?." And, for...