EN
Eight factors in the diversity of participation in role-playing games are named in the paper: age, gender, gaming experience, playing frequency, selected systems, division of roles in the game, extra-session engagement, interest in other kinds of leisure. The article demonstrates how these issues were included or omitted in reports on empirical psychological research that was conducted in Poland in the years 2001-2008. The results of the review imply that most of these factors did not receive adequate consideration in works from that period, which shows certain weaknesses in this area of Polish RPG research.