Flow state in game playing affected by computer self-efficacy and game competitive anxiety was studied. In order to examine the effect of those constructs with high competition, this study select "Escaping from firing online game" which require college students to escape from fire and rescue people and eliminate the fire damage along the way of running. 101 students participated the game and filled up the questionnaires, after they tried 20 minutes. Three hypotheses of this study were analyzed and the results indicated computer self-efficacy and game competitive anxiety had a positively association with flow state, but computer self-efficacy had a negative association to game competitive anxiety. (Contains 4 tables and 3 figures.)