Revolves around games that are more pve based, where a team goes up against AI and has to work together to finish the mission. Some of my favorites games I can think of are of this category.
Geared more towards the pvp side of the spectrum, where you are fighting other players to win. Although I am more of a coop type of player, I do enjoy some competition games as well, with one of them being my main game I play right now.