The study consisted of two sessions, which lasted approximately one hour each. Subjects were chosen to include only
students who did not participate in the earlier focus group study. The subjects consisted of three girls and five boys. In addition
to the gameplay elements investigated in the focus group study, students first used the software’s character selection
controls, then they used navigation controls to explore parts of the island: keyboard controls were used for navigation, and
the mouse was used for positioning the virtual camera. Playtests were conducted by having pairs of students work collaboratively
at one computer with one ‘‘driving’’ while the other offered suggestions. Students switched places mid-way
through the sessions. It was found that the Unity web player downloaded and installed correctly on school computers,
and CRYSTAL ISLAND downloaded correctly and ran at a reasonable frame rate. Videos from the study provided detailed feedback
on many environmental and control features, which was then directly incorporated into the subsequent design and
implementation.