I came across this odd story of an old, mysterious Gameboy version of Pokémon being hacked and for whatever reason I think about it every now and then. Essentially the game was hacked to where you had a Pokémon named Ghost, who instead of defeating other Pokémon, would kill them instead.
Defending Pokémon were unable to attack Ghost — it would only say they were too scared to move. When the move “Curse” was used in battle, the screen would cut to black. The cry of the defending Pokémon would be heard, but it was distorted, played at a much lower pitch than normal. The battle screen would then reappear, and the defending Pokémon would be gone. If used in a battle against a trainer, when the Pokéballs representing their Pokemon would appear in the corner, they would have one fewer Pokéball.
The implication was that the Pokémon died.
The story gets more complicated from there as you progress to old age and eventually learn a moral lesson about killing. Supposedly this game did exist but I’m not sure that anyone has ever found a cartridge for it. I find it so interesting that an urban legend could be centered around a video game. Reminds me a bit of The Ring, but with a video game, and no one in real life has died… yet.