A large number of studies carried out on pupils aged 8-14 have shown that teachable agent (TA) based games are beneficial for learning. The present pioneering study aimed to initiate research looking at whether TA based games can be used as far down as preschool age. Around the age of four, theory of mind (ToM) is under development and it is not unlikely that a fully developed ToM is necessary to benefit from a TA’s socially engaging characteristics. 10 preschool children participated in an experiment of playing a mathematics game. The participants playing a TA-version of the game engaged socially with the TA and were not disturbed by his presence. Thus, this study unveils exciting possibilities for further research of the hypothesised educational benefits in store for preschoolers with regard to play-and-learn games employing TAs.