…It kind of gets played after the game has ended, so does that work?

A: Yes, a Memo CAN stop the playing of that win card, even though it’s a kind of a little bit after the game ends. Memos, like Surprises, are meant to be that powerful.. provided they’re used in a timely manner. It’s meant to work in much the same way as the Secret Cultist Surprise, which can be stopped by another Surprise.