The study examines the levels of understanding logarithmic expressions within the
frames of a mathematical card game. The game is based on the popular card game Saboteur.
In this paper, we analyse the progress of a group of six undergraduate students participating
in a remedial course using games for recalling some fundamental mathematical concepts.
The context of the game allowed us to observe and rank their levels of understanding
logarithm and the change of these levels during the game.
