In previous research, we presented a methodological framework that provides players with adaptive feedback. The core of this framework relies on modeling the learning game with a Petri net. However, this modeling is a challenging task. Indeed, Petri nets are well adapted to model dynamic and complex systems but require a mastery of the underlying mathematical formalism to build them manually. In particular, when the learning game is characterized by a large freedom of action. In this paper, we present an authoring tool and its domain-specific language to assist designers to model learning games with Petri nets. We carried out a case study where our contribution was implemented. Results show that our contribution helps designers to build the Petri net in combination with classical Petri net editors which are still useful to visualize, to check and to validate the Petri nets built.

Serious games are now an increasingly used tool in business training. The question of the effectiveness of such devices on learning is a research issue. The indicators provided at the end of a video game are insufficient to understand and follow the path of a learning player. It is therefore necessary to track not only the player's actions but also to provide tools in order to analyze and diagnose the knowledge acquisition of the learner. We developed an approach based on Petri nets, used to model the accurate behavior of the player. We complete this tool with ontology to explain learner's mistakes.

Game-based learning or serious game is becoming an important trend in e-learning research area because it seems address several typical e-learning problems such as high dropout rates due to frustration and the lack of motivation to continue studying and the cognitive overload of the learner. However, an important problem of serious games is the difficulty for instructors to adapt the storyboard, the scripts and the game levels of the videogame to new pedagogical objectives once the game development is achieved. This paper presents SeGAE, an author-friendly environment that offers to instructors a set of editors in order to modify the game design by defining new characters, objectives, victory conditions, authorised actions among other objects in the serious games even after the development stage. Particularly, we apply our authoring approach on Blossom Flowers, a serious game developed by Ktm Advance.