Digital multi-touch tabletops are gaining increasing relevancy within commercial and educational sectors, as they can favor collaborative learning by enabling simultaneous interactions of several users and engaging users in the activity. They are particularly interesting for two levels of collaboration: collaboration at the tabletop and collaboration through tabletops. Our research interest focuses on exploring the potential of multi-touch tabletops regarding these different levels of collaboration to favor learning. We are particularly interested in serious games which are increasing and gaining more attentions in recent years. However, their design process is costly and time consuming. The main goal of this research is to design an authoring tool for serious games on multi-touch tabletops, which will allow non-experts to create mini-games for learning in an efficient and structured way.