The present invention relates to a method for playing a lottery game and for a sports-game totaliser. According to this method, each player (3) participating e.g. in a lottery uses an individual memory device (4) that comprises at least a timer (27), a memory (26), an information input-output device (29) as well as an indicator (31) defining a game area (89) corresponding to that found on lottery tickets of the "bingo" or "national lottery" type. This system is further characterised in that, when counting the time for recording hypothetical information into the individual memory device (4), it uses both the digital data from the timer (27) and the time characteristics thereof. The individual memory device (4) is further capable of recording simultaneously several variants of hypothetical information and of formatting the same using a predetermined algorithm.