Once you log enough hours into a multiplayer game, you start noticing patterns. Things people like to do in games, sure—but also what kinds of people you're likely to find in any given game.
This image by CANADIENxBOSS summarizes everyone from Halo and Minecraft and just about every game in-between perfectly.
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the types of people you meet online[CANADIENxBOSS]