Network games are a useful model to study strategic interactions over interconnected systems. When the individual decisions are binary, agents might prefer one action over the other according to the number of friends that are playing it. For instance, in the spread of innovations and beliefs, as well as in contagion, individuals adopt the new strategy if enough neighbors are choosing it. On the other hand, if a resource is shared, as in traffic flows and division of work, too many people taking an action can be an incentive for the player to choose the opposite one. These two emblematic situations are modeled as network games with coordinating and anti-coordinating agents.