At patient intake in emergency departments, triage is a key step in ensuring optimal patient care and good use of hospital resources. Triage nurses must be able to make correct clinical judgements and triage decisions despite extremely stressful working conditions including noise and task interruptions. This article presents a new serious game designed to closely reproduce the conditions of a typical emergency department. Its purpose is to provide a generic testbed both for teaching and for research, notably in order to enable studying the impact of stressors on the quality of decisions made. A study involving 49 professional triage nurses shows that, despite its relatively modest technological requirements, this serious game is considered by the participants as highly attractive and very close to their professional experience.