With the increasing popularity of smartphones and tablets, game-based learning(GBL) is undergoing a rapid shift to mobile platforms. This transformation is driven bymobility, wireless interfaces, and built-in sensors that these smart devices offer in order toenable blended and context-sensitive mobile learning (m-Learning) activities. Thus,m-Learning is becoming more independent and ubiquitous (u-Learning). In order toidentify and analyze the main trends and the future challenging issues involved indesigning mGBL learning strategies, as well as to bring to the foreground important issuespertaining to mobile and context-aware ubiquitous GBL, the work at hand conducts acomprehensive survey of this particular area. Specifically, it introduces and applies a six-dimensional framework consisted of Spatio-temporal, Collaboration/Social, Session, Per-sonalization, Data security & privacy, and Pedagogy, with the aim of scrutinizing thecontributions in the field of mGBL published from 2004 to 2016. It was found that thetransition to mGBL presents several difficulties, and therefore cannot be conceived as asimple and quick modification of existing GBL solutions. In this respect, this work isanticipated to foster the development of well-designed solutions that are intensive not onlyin their technological aspect, but in pedagogical qualities as well

• A critical review of 13 years of mobile game-based learning