Rapid development of technology has made simulator as a promising training tool. Advantages offered such as interactive and realistic training environments, mistake tolerance and training in hazardous scenario without causing harm to trainee, cost effectiveness, opportunity of training review and training time flexibility makes simulator widely used in aviation training, driver training, medical training and rehabilitation. Despite of these advantages, a major drawback of simulator is simulator sickness. Simulator sickness is a condition caused by inconsistency perceived by our vestibular system. Effected individual reported that they are experiencing nausea, fatigue, postural instability, headaches and difficulty in focusing which linger for hours or days in some cases. This paper will discuss the simulator usage and simulator sickness condition in Malaysia as experienced by researchers and a few organizations that use simulator as their training tool.