Ludology is often defined as the (academic) study of game structure (or sometimes investigating the gameplay) as opposed to the study of games as narratives or games as a visual medium.
Some academics claim that games are not a kind of stories because stories linear while games are mostly non-linear. In fact, readers are passive who do not really participate on the evolution of the story.
On the other hand, gamers are having tasks such as saving the world or defeating a legendary enemy. Stories are mostly about the past while game are the events that are happening as of this moment.
The term is originally coming from the Latin word “ludus“, which was used for game and the Greek word lógos, which can be considered as reasoning or science. The further research about Ludology should encompass the aspects, such as design, development and implication of games.