Vocabulary learning by far plays a crucial role for any students as vocabulary is the basis of their learning of English. However, it is often perceived as a dull, boring and laborious process. Therefore, in spite of their comprehensive awareness of vocabulary status, students meet a lot of difficulties and find no interest in learning English vocabulary. Thus, this present study is intended to investigate attitudes and difficulties in learning English vocabulary experienced by 7th form students at Phuong Nam private lower secondary school. Moreover, from the facts mentioned above, in order to help them learn English language in enjoyable atmosphere and feel vocabulary learning more interesting, the students are exposed to language games applied in six vocabulary lessons. Basing on the data gained through the pre-task and post-task questionnaires and interviews, the results show the feasibility of using language games since they can help the students learn vocabulary effectively.