For the pilot usability tests we addressed the following characteristics to evaluate the framework and the new form of interaction: Ergonomic:
the player tested the device and rated its ergonomic comfort level on a scale ranging from 1 (very uncomfortable) to 10 (very comfortable); Fun factor: the player tested the game with the different devices and rated how fun it was on a scale from 1 (very boring) to 10 (very funny);
Player choice: the player rated each scheme overall compared to the other two, ranging from 1 to 10; Feedback:
the user rated the quality of feedback he had with the device from 1 (bad) to 10 (great); Ease of learning:
the observer rated how difficult it was to learn the input device from 1 (very difficult) to 10 (very easy); Player score:
the game was scored according to the points made, and the player’s points were summed across all sessions with the same input device.