Designing interactive video simulations for language learning involves attempting to reconcile the need to devise a coherent scenario with the language-learning objectives of the simulation. In pursuing this goal, it may be helpful to apply the following practical principles: (a) Devise a scenario which creates opportunities to practice the target behavior, (b) try to reconcile the narrative sequence with the desired learning sequence, (c) let the criteria for success or failure in the simulation be determined by the learning objectives, and (d) integrate instructional procedures into the scenario. These principles are discussed and illustrated with reference to the experience of designing two particular interactive video simulations -those implemented on the Eurocentres Videodisc.