This book follows in the footsteps of Eros, the divine player par excellence. The figure of an immature, reckless, teasing, even cruel and unpredictable Eros personified, in ancient Greece, the intimate relationships that unite childhood with, on the one hand, play, education, including learning self-control and forming social bonds, and on the other, the sphere of emotions that awaken pleasure and thereby seductive power. One of the metaphorical expressions of this ambiguous power is the ludic activity that serves as a throughline for the contributions gathered here.