All children develop physically and intellectually at slightly different rates.  So there will always be a little leeway when matching the recommended age requirement on the packaging with your child’s age. Having said that, these recommended age markers often stem from recommendations from the manufacturer to address safety concerns.
For this reason, use caution if you are interested in a toy that your kid is too young for, according to the packaging. Supervise children during playtime until you’re confident about the toy’s safety.