In this paper, we describe a set of experiments that turn the machine learning classification task into a game, through gamification techniques, and let non expert users to perform text classification without even knowing the problem. The application is implemented in R using the Shiny package for interactive graphics. We present the outcome of three different experiments: A pilot experiment with PhD and post-doc students, and two experiments carried out with primary and secondary school students. The results show that the human aided classifier performs similarly and sometimes even better than state of the art classifiers.