  Yampolskiy and others have shown that the space of possible minds is vast,
actually infinite (Yampolskiy, 2015). A question of interest is 'Which
activities can minds perform during their lifetime?' This question is very
broad, thus in this article restricted to 'Which non-boring activities can
minds perform?' The space of potential non-boring activities has been called by
Yudkowsky 'fun space' (Yudkowsky, 2009). This paper aims to discuss the
relation between various types of minds and the part of the fun space, which is
accessible for them.
