‘Children are vulnerable no matter the environment, even educational games. In fact”, Charlene Doak-Gebauer  Online expert, says, “predators know that the children on educational games are often more sheltered than those on other applications, so they’re easier prey. Too often, parents believe their hardware and software filters are preventing predators,” Doak-Gebauer says, adding that “it’s a false sense of security; often, these games allow the players to communicate on the games through chats and even web cameras.”

Adult predators looking to groom children online often visit social media websites that are popular with young people and will pretend to be their age. The adult may try to secure their trust with fake profile pictures, by pretending to share similar interests, by offering gifts to the child or by complimenting the child.
Source: Child Criminal Safety Center Home

We know that 90% of children who are sexually abused know their abuser, so if this rule is true for physical, sexual abuse, just because your child is chatting with someone they know or that you know does not mean they will not be exploited by that person.
Never assume anything. Always ensure you are double-checking who your child is talking to and what information they are giving that person, whether you know them or not.
Below are the links to download a free app that will allow your child to contact you, no matter what if they feel they are in danger. 

Iphone – https://apps.apple.com/in/app/id6443935988

Android – https://play.google.com/store/apps/details?id=com.imsafe.app

Watch this video as it will give you some very clear guidelines: The Do’s and Don’ts of Sexting