Link!

Dream: I was watching and playing some Legend of Zelda game. The good old ones, bird's view - GameBoy. There were swamps and caves all over the places. And pots, a lot of pots. I thought about starting all over again from the beginning.

I was certain that I had seen the same dream scenery before.

Analysis: Yes, I thought about remembering a dream in the dream. And it's true, not imagined, I've had that kind of a dream before. So it didn't go to lucid state, but at least I questioned the situation slightly.