Purpose: This paper presents an educational virtual reality (VR) game and experiments with different methods of including it into the teaching process. The purpose of this research study is to discover if immersive VR games can be used as an effective pedagogical tool if blended with traditional lectures by assisting learning gain, memory and knowledge retention while increasing edutainment value. Design/methodology/approach: This research design comprises three different methods of learning: lecture-based involving lecture slides, infographics, and a video, game-based involving an immersive VR game of oil rig exploration, and the combination of lecture and game-based. Participants of each method filled up a questionnaire before and after participation to measure the learning gain, memory, and knowledge retention. Findings: From the predominant findings of the study, the combined method demonstrated a significant increase in learning gain, memory, and knowledge retention and maybe a potentially suitable pedagogical tool. Research limitations/implications: Limitations of the study include findings based on one VR game with a specific educational topic, additionally, it is suspected that having different participants for each of the three methods may have slightly affected the results, albeit to a limited extent. Practical implications: Findings of this study will provide evidence that VR games can be used alongside traditional lectures to aid in the learning process. Educators can choose to include VR games into their curriculums to improve the educational delivery process. Originality/value: This research contributes to ways of incorporating VR games into educational curriculums through findings of this study highlighting the combination of VR games with lectures.