Human thermal sensation and comfort are important topics in the design and operation of occupied spaces. Steady state thermal sensation and comfort have been widely studied and have robust predictive models available for designers. However, responses to transient conditions have received much less attention. The current study reports on the transient thermal comfort and sensation reported by subjects while playing a video game. Chamber temperatures ranged from 25°C (77 F) starting temperature to 40°C (104 F) and then back to 25°C (77 F) in a symmetrical profile design. The rise occurred over a 20 minute time frame and the fall occurred in a similar fashion. A total of 31 healthy males ranging in age from 19 to 34 participated in the experiments. Subjects weighed between 65-100 kg (143-220 lb) and had a height between 1.70-1.95 m (5.58-6.40 ft). Subject skin temperature, tympanic temperature, heart rate, and metabolic rate were also measured. The result indicated significant overshoot on thermal sensation but found a limited effect on comfort. Subject core and skin temperature was also monitored during the study allowing more detailed comparisons with models.