You are able to set up several accounts (up to four) so all or at least most of the children in your family can play against each other. There is an administrator account where you as the parent can oversee what games your kids play as well as what areas they are excelling and need improvement on. You can also pit your score against all the other Learnalot players on the leaderboard.
There are several different types of games to choose from that challenge different math subjects such as things as simple addition all the way up to geometry and spacial relation problems. If you are a teacher, they also have teacher accounts to utilize for your school students. For a more thorough explanation of the benefits of Learnalot: Benefits. Try the 14-day free trial here. You can purchase a home account for: £35 including VAT. You can find Learnalot on Facebook and Twitter.