Adolescents enjoy animated-action computer games that capture and hold attention. In this study, the use of computer-assisted instruction in improving knowledge and attitudes in favor of decreased teenage pregnancy is evaluated. Computer-assisted health education is an interactive process and simulates reality. Teenagers explore alternatives and outcomes, and experience consequences of behavioral choices. Two games were designed to promote understanding of the impact and cost of sexual behaviors and parenthood, as well as provide sexual survival skills. Educational evaluation in high schools showed improvements in knowledge and attitudes in these sensitive areas.