Earlier quoted context omitted.
Flappy Bird is a clone itself. There were a few different flash/java games that features almost identical gameplay. IMO, helicopter game was the best of these. helicoptergame.net Flappy bird actually is supposed to be a troll, and that's why its so popular. People found its ridiculous difficulty to be funny, and that's why the game went viral. I agree with the other commenter that it isn't well-tuned at all. The hit-…
I think it's a disservice to call it a clone of the helicopter game. It's a very similar idea, but how the game is played and the consistency of the obstacles are very different.
The way the game is played is nearly identical. You either increase your altitude or decrease it.
I agree that the consistency of the obstacles is different though.