Agar.io

This is a simple game about growing your single-cell organism bigger than other players. We love it in our family because there is a surprising amount of strategy and collaboration. You need to pay attention to other players to decide if you are bigger or smaller than them. Taking your time and hiding behind virus cells is a tactic our youngest used a lot. Best of all though, splitting your cell to offer another player a way to grow is commonly seen as a sign to work together. We’ve had long games where we end up hunting in packs with others. It’s a great way to learn cooperation.