  Learning Games (LGs) are educational environments based on a playful approach
to learning. Their use has proven to be promising in many domains, but is at
present restricted by the time consuming and costly nature of the developing
process. In this paper, we propose a set of quality indicators that can help
the conception team to evaluate the quality of their LG during the designing
process, and before it is developed. By doing so, the designers can identify
and repair problems in the early phases of the conception and therefore reduce
the alteration phases, that occur after testing the LG's prototype. These
quality indicators have been validated by 6 LG experts that used them to assess
the quality of 24 LGs in the process of being designed. They have also proven
to be useful as design guidelines for novice LG designers.
