Be unique, don't imitate, don't ape, don't rip-off, because at the end of the day, a game is just a game.
Someone should've told Flappy's creator this. I'll keep it short. Jetpack Joyride's "Profit Bird" vehicle + Mario graphics + helicopter = Flappy Bird. `Nuff said.
But no, what gets me is if you check out a game on the App Store called "Flappy Wings", to me it's Flappy Bird done right, with clear attributions to its inspirations, no pretension that it is an "original" game in any way, shape, or form, and has better extras, like cute hats you can earn/buy for your bird to wear and real (and catchy, if repetitive) music. Heck, the bird randomly cheeps and poops. Purile but still more than Crappy Bird did. And despite all the good things I find in Flappy Wings, all the reviews basically say, "It's ok, I guess, but Flappy Bird is better." SAME gameplay but MORE goodies and still Crappy Bird is better?
It proves one thing to me. You don't have to be the best at what you do. You just have to be FIRST. If your effort goes viral and you're the first one to do that thing, even if you remove your work from the public and someone comes along and makes an EXACT CLONE that spits out REAL GOLD COINS out of the charge cable slot, people will STILL claim the clone is not as good as the original.
I still think he took the game down for "other" reasons than the one(s) he mentioned. *coughcoughcopyrightcough* C&Ds don't have to be public, you know.
I say let people complain about Crappy Bird to get it out of their system. It hurts nobody as long as they remain basically civil about it and within the ToS/Rules of the forum. If you don't like the complaining, move along to "more interesting/worthwhile" threads. *shrug* Complaining about complainers is a ridiculously circular argument.