This study was carried out to investigate the current status of simulation use during teaching within health sciences and engineering faculties at Saudi universities. Simulation in teaching has been shown to be effective at enhancing student understanding. However, the current status of simulation use in teaching, especially in Saudi universities, remains unclear. To address this, here we aimed to: determine the ability of simulation to achieve appropriate levels of realism; identify the effectiveness of simulation at improving skills, awareness, and knowledge in health sciences and engineering; and test whether simulation improves the critical and evaluative thinking of students. Data were collected using online questionnaires. We found that simulation is being effectively applied in Saudi universities.