And when sexual content is clearly identified on the package of a video game -- along with violence, profanity and other forms of mature content -- that belief is put to the test.
Since 1994, video- and computer-game manufactures have labeled each one of their products with one of several age-specific ratings determined by the independent Entertainment Software Ratings Board. The ESRB system includes an early childhood rating, a 6-and-up E (everyone) rating, a 13-and-up T (teen) rating, a 17-and-up M (mature) rating and an adults-only designation.
In an industry originally geared toward the kiddie market, video games receiving an E rating continue to be the norm.
But recent sales figures show that racier games are gaining ground quickly, and some experts say the rise in sales for games with adult or teen ratings are causing game developers to design games with a more mature ESRB rating in mind.
"Overall I think that game developers are very conscious of what the content is in their games," said Wes Nihei, editor-in-chief of Gamepro magazine. "They're putting it in there with the full knowledge that that's what it is."
A representative from ESRB said that developers don't have direct contact with the organization over a game's rating but that developers sometimes resubmit a different version of the game in order to receive a desired rating.
And Nihei said that with developers aware of the rating a game is likely to receive, they are beginning to design and market games with the intention of getting a T or M rating.
Based on recent sales trends, such an approach could be a profitable move.
The percentage of gaming sales for M-rated games has jumped from 6 percent to 13 percent over the past two years, according to the NPD group, a market analyst company.