The STEAM online game is a serious game designed to train experts in advanced multimodality. Players have to select answers during a discussion. The number of right answers gives them access to selected modalities. Each modality combines a strategy, a tool and a learning environment. To give an example: a strategy can be collaborative learning, the tool could be a blog and the learning environment a classroom. The game suggests different combinations, ranging in difficulty from low to advanced levels of learning. There are many scenarios and stages, from which the players have to select a combination. By answering correctly, players can progress in the game. The possible combinations depend on the educational objectives of the particular scenario.