In recent years, there are many products with high performance, multifunctions and nice design. But people who can not use them are increasing.
It is because the interface design is bad. They are not bad. Evaluation of a product is decide by the ``utility'' showing a performance or a function, and ``usability'' showing the ease of using. Then, in this study, the games were prepared using ``Macromedia Flash'' and the questionnaire was carried out about usability. There are two games. And three kinds of operation methods are in each game.
The result of the questionnaire was almost as expected. But also the questionnaire showed some problem and opinion which were not expected. The importance of a questionnaire for better usabiliry has been understood
Since there is no correct answer in ``usability'', there must be many difficult portions. However, the importance should increase further from now on..