Are high Amazon ratings reliable for card games?

Partially. Card games with tens of thousands of verified-purchase reviews (UNO, Play Nine, Taco Cat Goat Cheese Pizza) hold their ratings under volume, which is harder to game. But we still cross-checked against r/boardgames and BoardGameGeek discussion, since Amazon ratings tend to skew positive for any cheap, gift-friendly game and don't surface long-term replay value.