Learners' needs and demands about long-life professional training have changed, thus requiring efficient and motivating training solutions. In the present-day socio-technological context, the use of game for training appears as an interesting answer. This PhD work (conducted in partnership with the company SYMETRIX) deals with the support of pedagogical designers. First, we have conducted an exploratory and structuring study about topics related to the use of game for training. Then, we have focused on specific training programs using game: Learning Role-Playing Games (LRPG). We propose models aiming at supporting designers in the creation, sharing and reuse of this kind of programs. One of our proposals aims at centering the reflection on the use of game principles. Another proposal consists in guiding the formalization of LRPG scenarios thanks to a visual language implemented in design support tools. Two experimental studies have been performed to test these proposals: the first one was based on the use of a cards-based design support tool; the second one used a computer-based environment.
