  An experience of fun can be an important factor for validating the value of
games. Research on non-game HCI has been attempted to measure the enjoyment of
work. However, a majority of the studies do not discuss the importance and
value of the result. It is not clear as to how the term fun is understood in a
non-game context. To analyze this shortcoming, we reviewed extant studies, and
explored as to how researchers determine if the value of an activity is fun.
Consequently, we discussed and categorized the usage of the terms and analyzed
the methodologies that are used in extant studies that evaluate the effects of
fun and related terms. To gain a better understanding of fun in HCI, we
provided several directions that can be discussed for strengthening enjoyable
HCI research beyond applications involving games.
