Video games are categorized into
genres based on their
gameplay. Due to a general lack of commonly agreed-upon genres or criteria for the definition of genres, classification of games are not always consistent or systematic and sometimes outright arbitrary between sources. Within
game studies there is a lack of consensus in reaching accepted formal definitions for game genres, some being more popular than others. For example, some schemas are largely
semiotic, while others rely more strongly on configurative patterns of interface and mechanics.
See more at Wikipedia.org...