Researches in interdisciplinary teaching methodologies on environmental education and in assessing their impact were recommended in Thessaloniki Declaration (UNESCO, 1997). Therefore, the purpose of this qualitative study was to develop and field test an educational game, EnviroPoly, to promote environmental literacy. The game was piloted with 44 elementary/mid-level pre-service teachers. Afterwards five pre-service teachers met in a focus group to discuss the game and its procedures. The discussions and observations of the large group of teachers during play and the smaller focus group indicated that EnviroPoly is attractive, motivating, enjoyable and useful. Additionally the game was found to be applicable for different grade levels by adapting reading and question cards. (C) 2011 Published by Elsevier Ltd.