**1.3 Aim of the study**

Although pieces of gamified MI-BCI research have published, no literature has mainly and specifically analyzed the existing gamified MI-BCI training methods. This research gap reveals the essence of accomplishing one literature review for the above purpose. Thus, this paper will review the current non-invasive MI-BCI game in academia. We expect the result could help identify the feasibility of existing MI-BCI game development. This finding probably helps optimize the future research-based game design in testing whether gamified MI-BCI training mode would have a better outcome than the traditional mode.
