10 Ways Players Accidentally Broke Video Games
5. By Killing Strangers - Morrowind
Now, let it be known that this particular way of "breaking" Morrowind was more the game teaching you an important moral lesson: it's not a good idea to go out and kill people all willy-nilly.
Because, unlike later additions to the series, in Morrowind you can (theoretically) kill whoever you want. This sound great in theory - as we've all had that one NPC we desperately wanted to see the back of - but in practice it had some pretty serious drawbacks.
Should you be unfortunate enough to slay someone you needed for a quest, you'd then be unable to finish it, since the person you needed to chat with to continue or end it was now sort of a little busy being dead. If you were unlucky enough to have killed a person vital for the main quest, then this became infinitely, infinitely worse.
If you made a habit of killing NPC (or happened to kill one by accident) this could mean that, many many hours later, you'd suddenly realise they were a secretly important character, and that you would either have to go back to the point you killed them at, or just deal with never properly finishing the game.
Safe to say, nobody enjoys making that choice.