The Legend of Zelda in JavaScript
zelda30tribute.com
zelda30tribute.com
"Nintendo asked us to remove this site for copyright infringement. I guess Zelda30Tribute was a little too pixel perfect :-) We're sad about that, but we get it. We started this project because we love Nintendo and the joy they have given us throughout the years. From the start of development, we knew this result could potentially happen. Nintendo has every right to protect their IP. No complaints from us, we had a blast working on this tribute and made some friends along the way. "
From the exact site linked. Looks like this project went the same way as that Mario 64 Bob-omb Battlefield remake and Full Screen Mario.
Heck, why even go that far? Given how often it gets updated, Nintendo's legal team is probably just skimming GoNintendo posts and seeing what 'questionable' projects come up.
So no fancy tech or constant surfing. Just likely some bored guy checking a few gaming sites every few minutes.