I know this will probably sound extremely silly and First World-ish (and I'm unsure if this counts or not), but...
My personal vote goes to the slot machine situation in the Pokémon games starting from Platinum. From my understanding, some countries in Europe passed an act that deemed it illegal to for games marketed to kids to feature gambling of any sort. When Platinum hit Europe, the slots were literally ripped out of the game (or I think just made unaccessible?), and instead, the game corners just randomly gives out coins.
But wait, I live in America, how does that effect me? Because for HeartGold/SoulSilver, to make it easier for translation purposes, all regions with an English language option (including both America and Europe) had the slot machines completely missing and instead removed with the annoying and boring Voltorb Flip game. And for all generations and remakes after that? Well, since we all essentially get the same version now, just with language options in the beginning, no more game corners ever again.