Would have to disagree to a point, not all games are fantasy. Such as a learning game lol OK I am pushing it!! But there is some realistic games..For example Forza 4 is pretty accurate on modifying cars and such. Have you played mass effect?? The whole game is decide this and decide that.
Many writers have tough times when they get to a point in a story where..there are like so should I do this or this..If I do this then it may not be work as well as this one..and etc..
So by putting a bunch of outcomes... lazy is not the word i was looking for..It was just the first word that popped up in my head it is more like indecisive. Go with one and run thru it. Hopefully you made the right choice and the story sells well.