I agree. It's not Mario ripping-off, but rather just a game cliche. You know, get 100 whatzits and you get an extra life. Same thing in Turok, Kirby, Donkey Kong, and even Doom, to an extent. It's not ripping Mario off (it's a negative and monotonous feature, in my opinion) but, rather, it's become the accepted norm for a game. You can get a game and not even know the name or read the instruction manual, but you know that if you find some item that the game keeps track of how many you collected, then your instinct is to get 100 of 'em. Exploding barrels have become an annoying cliche (you shoot them, they always explode), and Doom was the first FPS to feature them. Now, all FPSs have exploding barrels. But that doesn't mean they're ripping off Doom, now, does it?