The Calangos game is based on modeling of a real ecological case concerning East Dunes San Francisco in the state of Bahia investigated by Brazilian researchers. The ultimate goal of the game is to allow the student an environment with sufficient realism allowing a proper understanding of the ecological and evolutionary processes.Calangos is a simulation game and action with 3D visualization in first or third person set in the area of the dunes of the Sao Francisco River in which the player controls a lizard one of three endemic species in the region psammonastes Tropidurus Cnemidophorus sp. nov. and Eurolophosaurus divaricatus .This is an educational video game that should serve as a tool to support the teaching and learning of ecology and evolution at the secondary level of education. So this is not a game of direct exposure of content to be learned by the student player but due to the learning experience in attempting to resolve problem situations.