So far, this list has been missing an RPG, so here comes Portal Knights to fill that spot. This sandbox action-RPG is fantastic for teaching kids about teamwork and team dynamics.
In Portal Knights, you take on the role of a Warrior, Mage, or Ranger who must travel to different worlds to lots of different islands to combat the effects of the great Fracture. Each island is randomly generated and offers a variety of unique environments, creatures, and resources for crafting. The crafting and gathering side of things is a nod to Minecraft, while the look of some of the land and characters themselves are quite reminiscent of LEGO.
This game caters very well to two types of players -- the first being younger players who will enjoy mining and crafting items as well as the farming aspect of the game; the second being older kids, who may enjoy a more in-depth combat system.
Portal Knights is currently available on Steam for PC, but it is also available on PS4 and Xbox One.