Knight's Quest 
You're still in a cave, but at least there's a torch burning in the corner to provide light. 

There are ten doors in front of you. 

"Something I was supposed to remember," you say.  "What was it?  Six of one, half a dozen of the other.  One for all, and ten-four good buddy.  Eight is enough.  One for the road, two's company, three's a crowd, four score and seven years, give me a high-five, seven come on lucky seven, revolution number nine revolution number nine number nine number nine -- now what was it?' 

ONE TWO THREE FOUR FIVE SIX SEVEN EIGHT NINE TEN