A number of arcade games will provide a variety of stages, characters, and other settings to select. For most newcomers, none of this matters, because they'll just go for the default settings. These are the settings you'll always, always see whenever someone at the arcade tries a game that they're new to, and in bigger cases of this trope, merely picking something other than the defaults is a sign of experience with the game. May apply to non-arcade games too, but it's less of an issue because Who Would Be Stupid Enough...? to break into someone's house to watch them play?