There was concern about whether the children would understand how to move the blocks, using the mouse on a personal computer, or a touch screen on phone or tablets. Visual and audio cues were added and tested to provide interactive feedback. A tutorial heavy in symbols was added to the very first level that a child performed. If he or she repeated the action asked for in the tutorial, it would move on; if not, it repeated the instruction with more detail. One play test examined the unity of the tutorial, and found that even without voice-over accompaniment (in English) describing the actions, the illustrated action storyboard was good enough to communicate how to move and rotate blocks and the UFO to help the alien.