…Player A only has the Zombie Repellent sitting in front of her while Player B has the Car and a zombie. The Goal I Alone Survived is played, requiring just the Car and everyone else having zombies. During Player A’s turn, she plays Exchange Keepers and trades her Zombie Repellent for Player B’s Car. Some of the players in the game believed that Player A won instantly because at the moment she was the only one without zombies and met the Goal, but the others believed that Player B’s having received the Zombie Repellent would go instantly into effect – and he would have transferred his lone Zombie to Player A…

A: Player A does not win. Although it could be argued that there is a slight lag in both in story and gameplay while Player B sprays his repellent and decides where his zombie goes, we would rule that technically those things are simultaneous in terms of gameplay, and moreover, even story-wise the lag would not affect the long-term outcome: the car thief would not be the only one surviving. Here’s how we see the story playing out:

Sure, it makes sense that the repellent would take a little time to take effect, but this is irrelevant. If someone (Player A) literally ran up to you and your zombie and your car, and stole your car, tearing off with it into the distance, while tossing you their can of zombie repellent, saying “So long sucker!” who would win?

One might argue that Player A wins because you were temporarily “with zombie” and they were driving off with the car. That’s one answer – but we think you would survive in the end, since you have the repellent, so your car thief, player A, is not “Alone Surviving” to meet the stated intent of the Goal.