I don’t know if these were ever popular outside of the UK, but Top Trumps are a commercial variant of War, where you can buy decks of Sports Cars, or Military Aircraft, or Dinosaurs, or whatever else. Each card is printed with a photo and various numerical statistics about its subject, and the game is played in exactly the same way as War, except that the winner of each round chooses which stat to compare for the next one.

(So it still has as little strategy as War, the only real difference being that you aren’t necessarily sure how strong a given stat is, until you’ve played the deck through once. Although even then, it still needs some memory - that 200mph might be a good “Top Speed”, but, unless you know for sure that it’s the fastest card in the deck, you won’t know the exact odds of your opponent’s card being better or worse than it.)

Top Trumps were popular in school playgrounds of the 1980s, and have been experiencing a nostalgic resurgence over the past few years, with various decks being brought out based around modern films and television series; Lord of the Rings, Buffy, The Simpsons, and things. But they all have the same boring old rules. No extra, advanced set for players who aren’t six years old. I imagined there’d be some alternate rules online somewhere, but all the fan sites I’ve found seem more enthused by the idea of TV-themed decks existing, than being playable.

What games could you play with a set of pre-printed cards that each had a list of numerical stats? (Perhaps assuming that powerful cards are balanced in an interesting way, which is often the case; that a card with unbeatable Intelligence might have a low Strength, and vice versa.)