"Super Mario Bros 3" (1990) and "Doom" (1993) are two of the top video games ever — even if they've been left in the dust by newer selections.

But whatever your video game favorites, we're bettin' you never figured there'd be one devoted to preventing sexually transmitted diseases.

Well there is, and it's arrived none too soon. STDs (particularly chlamydia, gonorrhea and syphilis) have hit an all-time high in the U.S.

To help stop transmission of STDs, researchers at Yale University developed a video game that improved sexual health knowledge and attitudes among kids 11 to 14 years old from 12 community after-school, school and summer programs.

Out of 300 kids, the group who played the game, which has students make decisions in realistic situations, was more likely to answer sexual health questions correctly and had a healthier attitude toward sexual behavior.

Although the video game isn't yet available to the public, you can help protect your child from contracting an STD by having conversations with them about the risks.

Like in the video game, discuss different social scenarios that might happen and ways to react that increase protection.

Explain that while chlamydia, syphilis and sometimes gonorrhea can be cured with antibiotics, if untreated, they can cause infertility, life-threatening ectopic pregnancy, stillbirth, and increased risk for HIV transmission.

Need help? Check out the Department of Health and Human Services Office of Adolescent Health's resources for parents about talking to teens about sex and more found at www.hhs.gov/ash/oah/.