This paper offers a systematic overview of collaboration in virtual and augmented reality, including an assessment of advantages and challenges unique to collaborating in these mediums. In an attempt to highlight the current landscape of augmented and virtual reality collaboration (AR and VR, respectively), our selected research is biased towards more recent papers (within the last 5 years), but older work has also been included when particularly relevant. Our findings identify a number of potentially under-explored collaboration types, such as asynchronous collaboration and collaboration that combines AR and VR. We finally provide our key takeaways, including overall trends and opportunities for further research.
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