Comment by AngryData

I wouldn't consider that a universal feature. It can certainly help, especially if you are aiming for a generalized audience, but not every game needs to be either intended for or accessible to every person.

I would use Crusader Kings as an example, it doesn't even seem like a game at first, you have no idea what is going on, and large swaths of options and features may take dozens of hours to stumble across. But yet it is still a great game with many fans and players.