Sandseter and Kennair define risky play as “thrilling and exciting forms of play that involve a risk of physical injury.” (In a 2023 paper, expanding on their original work, they add that risky play also requires elements of uncertainty.[17]) They note that such play usually takes place outdoors, during free-play time rather than during activities organized by adults. Children choose to do activities that often lead to relatively harmless injuries, particularly bruises and cuts.