To solve the problem of Chinese EFL students’ passive and ineffective vocabulary learning, task-based language teaching (TBLT) methods were introduced to English classes at a university. With TBLT, students interacted with each other by using English, especially English words learnt, in order to fulfil the tasks designed by teachers. Based on second language acquisition theories, students were able to understand input and produce output during this process. This paper focuses on using TBLT in English vocabulary teaching in three non-English major classes of a Chinese university, involving the use of some word games. The word games’ features, organization, and a skill set built through those games, will be discussed. In terms of methodology, an online questionnaire survey was conducted among 93 university students from the three classes. Also, results of the students’ before-task and after-task word quizzes on Moodle platform and exam paper results were analysed. The research findings showed that students enjoyed playing word games in the English class and benefitted from it, in terms of language development and building skills. This paper recommends teachers to use TBLT in English vocabulary teaching and learning, as it is practical and can assist in EFL learners’ vocabulary acquisition.