摘要：Vocabulary knowledge in second language learning is imperative in acquiring competence and mastery in the language. It is a fundamental competence that English Second Language (ESL) learners need to master as a wide vocabulary repertoire is necessary in aiding them to understand verbal and written communication. This literature review also highlights that Malaysian undergraduates’ learners are lacking in vocabulary mastery that caused drastic decline in their proficiency of both written and spoken English. The integration of educational online games in teaching vocabulary has a growing popularity due to the widespread belief on its potential to enrich learning process. This paper provides a literature review on the elements, interest, and challenges of the online games in ESL learners based on multiple past studies. It is proven in the literature that online games are potential tools in vocabulary learning as it raises learners’ learning satisfaction, and fosters autonomous learning among learners. Many studies have also proven that online games support the acquisition of 21st century skills. Nevertheless, in the eagerness to employ online games, it is imperative for educators to be aware of the challenges before making a wise decision to integrate online games as classroom activities.
关键词：Vocabulary;Online Games;ESL Learners;Teaching and Learning
