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Breaking the Fourth Wall at the time. Guide Dang It! and That One Puzzle now.
555 has a few listed "aversions"—as in, real phone numbers appearing in a game, and they actually connect to something relevant if you call them in Real Life. But not many that are really required to advance.
Also related to the "Puzzle method" of Copy Protection. Also this is the bread and butter of Alternate Reality Games. I think this may be a Missing Supertrope. I can think of some other examples off the top of my head: The X-Men game for Sega Genesis requires you to perform a soft reset on the console before you can enter the final level. Metal Gear Solid 2 had that boss who hijacked your controller input, so you had to move the controller to a different port. In Fez you have to use a smartphone with a QR code reader to solve certain puzzles.
I didn't write any of that.
I know this is an old thread, but was the missing supertrope ever made?
No Fourth Wall as well.
It was launched as Paradiegetic Gameplay.
I didn't write any of that.
Thanks.
Example: In Who Framed Roger Rabbit there's a 1-800 number that you're supposed to call. As in actually call, using a landline or cell.