the power of the official nintendo player's guide

I started an AtariAge thread about a well-worn topic, the Video Game Crash of '83.
One portion of it was a pivot to home computers, which had dropped dramatically in price, and allowed massive piracy - useful for kids who didn't have much money.

But I pivoted back from the Commodore 64 to the NES even though I knew the computer was more powerful... in part because of the promotional power of Nintendo, especially the black-covered Official Nintendo Player's Guide. It really felt like no one was making a game like "Metroid", and here were the maps to prove it.