Finally the authors who have realized that we learn best through play, regardless of age! Very useful both for a trainer that looks for variants to its interactive exercises for a consultant who is looking for new ways to create group dynamics ... other than with post it! Thiagi themed games are also very useful in a logic of teambuilding to advance a group. The learning objectives for each game are well identified. Other interests: authors deliver their recommendations based on group size, provide illuminating examples, ..