So, there was this thing called "Twitch Plays Pokemon" where Twitch users control a single game of Pokemon by entering a control into the chat which gets sent to the IRC or something of the game and the game does the action as told. Hilarity ensues when you have over tens of thousands of players playing.
Now, they're doing Zelda. Currently, Link's Awakening. Whether or not the experiment will work for Zelda remains to be seen.