Usability Testing of Vocabulary Game Prototype Using the Nielsen's Attributes of Usability (NAU) Method

A prototype of vocabulary game was developed for student who wants to learn English. With this application, user can play various game while learning English. The prototype was evaluated through usability testing to access its learnability, efficiency, memorability, error, and satisfaction. In the end, it was found that vocabulary game learnability rate was 74,4%, efficiency rate was 82,3%, memorability rate was 84,1%, error rats was 49,5%, and lastly 80,2% for satisfaction. Method used in this research was literature study carried-out includes material of User Interface, Usability Testing, and Nielsen’s Attribute of Usability Model tested using SEM, Smart PLS as statistic tools. Then from 47 respondents, who were asked to use the interactive UI, they had to run Usability Testing and answered the Post-Test Questionnaire. The result found that 2 hypotheses rejected and 3 hypotheses accepted.