That happened pre-patches as well in different grades.
The Hunt for Red October on Nes had two revisions, and the released Game Genie codes only worked on one revision.
The Untouchables on Nes had 3 revisions. On the third stage, you shoot alcohol bottles from a third person view, and you move around your character and the crosshair at the same time.
Every bottle shot is worth 4% and the crosshair can only be moved when the virtual character is not rolling somewhere else.
The third revision has every bottle shot worth 5% and allows the player to move the crosshair at all times. This makes things easier, but it also forces a different strategy.
Super Smash Bros Melee had so many regional nerfs so it is not even fun. In the Home-Run contest, you have to make a sandbag fly a specific distance to earn a trophy. You got 10 seconds to damage the sandbag, more damage means it will fly longer. The trick was to spam Yoshis down attack. This attack was nerfed in the PAL release so it was impossible to do it with Yoshi.
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