Imagine for a second that you are trapped inside the last game you played, using only ingame elements, you need to tell the outside to rescue you by turning off the game.
Let's take an example; you are trapped in your Minecraft server and you can't speak or chat, you can locate blocks to form a message, do you think the other's in the server could believe you?
Or imagine in a SP game, you need to use the ingame mechanics to tell the person outside to turn off the game, would they think is an easter egg or would them proceed?
Let's take that creativity out and let's see how you could escape the game.