This study examined the effects of messages on altering risky gambling behavior in college students. While playing a chance-based computerized game with play money, three groups of participants either viewed occasional accurate messages that correctly described the contingencies of the game, neutral messages unrelated to the contingencies, or no messages. Participants in the accurate message condition spent overall less money gambling, played fewer trials in the final phase of the game when all trials resulted in losses, and were more likely to quit the game while they still had money remaining in the bank. The findings suggest that "reminders" about the random nature of games and the overall negative rate of return might lead to more responsible gaming.