Ratings of LEGO Video Games is in North America done by The Entertainment Software Rating Board (ESRB).
From the ESRB-homepage:
ESRB ratings are designed to provide concise and impartial information about the content in video games and mobile apps so consumers, especially parents, can make informed choices.
ESRB ratings have two equal parts: rating symbols suggest age appropriateness and content descriptors indicate elements that may have triggered a particular rating and/or may be of interest or concern:
Titles rated EC (Early Childhood) have content that may be suitable for ages 3 and older. Contains no material that parents would find inappropriate.
Titles rated E (Everyone) have content that may be suitable for ages 6 and older. Titles in this category may contain minimal cartoon, fantasy or mild violence and/or infrequent use of mild language.
Titles rated E10+ (Everyone 10 and older) have content that may be suitable for ages 10 and older. Titles in this category may contain more cartoon, fantasy or mild violence, mild language and/or minimal suggestive themes.
Titles rated T (Teen) have content that may be suitable for ages 13 and older. Titles in this category may contain violence, suggestive themes, crude humor, minimal blood, simulated gambling, and/or infrequent use of strong language.
Titles rated M (Mature) have content that may be suitable for persons ages 17 and older. Titles in this category may contain intense violence, blood and gore, sexual content and/or strong language.
Titles rated AO (Adults Only) have content that should only be played by persons 18 years and older. Titles in this category may include prolonged scenes of intense violence and/or graphic sexual content and nudity.
Titles designated as RP (Rating Pending) have not yet been assigned a final ESRB rating. This icon appears only in advertising, marketing and promotional materials related to a game that is expected to carry an ESRB rating. The RP is replaced by a game's rating once it has been assigned.
For more information:
Visit the ESRB-website for more information and search for ratings on specific Video Games.