What Makes a Good Pet? From the introduction: When Children Play is an adventure for six characters of levels 1-3. The adventure takes place in the wilderness and can be easily placed in any campaign world and can easily be played as a random encounter. A ranger in the party would be useful in playing this adventure, though they are not necessary. This adventure is designed to be a light-hearted adventure and not too serious. As such, the [dungeon master] should expect the unusual when approaching this adventure.