In one of my earliest past incarnations, I was an ancient Persian courtier and game designer. My magnum opus was a grid-based tactical abstract that I called "King Hunt," which became quite fashionable at the time.
Centuries later, in my current life, I recalled these events under hypnosis, and was horrified to realize that MY game — now called "Chess" — is among the world's most popular games and being enjoyed everywhere completely without attribution!
Of course, I immediately contacted the owner of the world's most popular chess website to demand royalties. He refused, but wisely offered me a position in Product.