Tetriser There are literally hundreds if not thousands of fan-games, fan-comics, fan-fictions, fan-albums, what have you...and to my knowledge Nintendo hasn't come after any of them except that Metroid fan-film that was on Kickstarter (BECAUSE it was on Kickstarter), and a Pokemon MMO (even that one is questionable). It just bothers me when someone posts about "the dangers of making fan-games" when there is an entire world of fan-works out there with no problems.
— Sounds unlikely to be honest. If that were true then why does Project M - a SSB hack that Nintendo openly despises, still exist? There are live-streams and tournaments with cash prizes and everything for it. What of Brawl In The Family who actually sell merchandise based on Nintendo characters? What of AM2R? Metroid:SR388? Project Fusion? Metroid: Metal? Zelda:OOT 2D? The list goes on and on and on. Even my own fan-game Minitroid was on numerous major gaming sites and I was constantly being told I'd get a C&D or whatever and absolutely nothing ever happened.
I'm not saying they can't or won't C&D fan-works...I'm saying THE VAST MAJORITY of C&D's never actually happened; the developers just didn't want to admit they couldn't finish the project or lost interest or whatever...kind of like when people say they had a hard drive failure and lost the whole project. Yeah..right...
The way I see it..the only reason Nintendo or whoever will C&D your work is if it affects their sales, or if it is something they are planning on doing themselves, or if you're profiting from it... and if they so happen to be in a pissy mood when finding out about it.