This study aims to investigate whether there is any benefit in using IVGs among the Iranian pre-intermediate EFL learners or not. Therefore, 60 EFL learners from Padideh Derakhshan Institute in Sahinshahr, Isfahan, Iran were chosen as the sample. First, a test of novelty was administered at the early stage to ensure the novelty of to-be-instructed words. Then, the participants were divided into experimental and control groups in order to receive their respective treatments. At the end of the course, both groups sat for posttest and about 1 month later they sat for delayed posttest. The findings of the study showed that there is no significant difference in learning vocabulary through using IVGs. The results also showed that male and female language learners had the same progress and no significant difference was seen. And finally results showed that using IVGs has a significant effect on the learners' vocabulary retention.