Wizard 101 is an engaging, massive MMO for kids set in a fantasy wizardry world.
Pretty much, it's a kids dream. It is free to trial and then becomes subscription based with in-game purchases like mounts, upgrades, etc. The world is colorful and animated and the game play is very engaging. Even though it is a for kids game, it has some crude humors in there, like farting. It also has a chat, so that’s probably why it got a 13+ rating. It does get update regularly if you’re a subscriber.Official Website
The fictional universe of the Spiral is divided into several worlds, each of which has multiple areas. Players can unlock these temporarily with "memberships", or unlock each area permanently with the game's premium currency "Crowns". When a wizard first starts the game, he or she will have to choose a school: Ice, Storm, Fire, Death, Life, Myth, and Balance, each complete with their own set of unique spells.
The game is based around "duels": two teams made up of one to four players or computer enemies who take turns casting spells. Spells can reduce the health of enemy creatures, increase the health of friends, add shields which reduce damage, add blades, traps and buffs which increase damage, and more. When a player reduces a computer enemies' health to zero, they are defeated, while players with a health of zero can be healed by others on their team. When every player or computer on a team has zero health, the other team wins.
As the player progresses, more worlds become available. When wizards level up they gain new badge titles and automatic increases of their base statistics: health, mana and energy. Most equipment also has level restrictions. Hobbies such as training pets, fishing and gardening require energy; while crafting not only requires that, but also various resources. Duels can be played against other players in the PvP arena.
Over all it reminds me of Hearthstone combined with WoW (World of Warcraft). There is a card collecting aspect and exploration and dungeoning. There are other aspect as well as gardening, but you don’t get to experience that in the trial version.
A fair warning though, this game is very addicting and can reel your kids in. It will probably cost you some dough since boost are sometime necessary for impatient people. With the right supervision, you can let you kids roam and learn thinking and reasoning. Overall it’s a great game for kids to play and learn!