THE GREATEST INVENTION in romance since condoms, dating apps are pure efficiency: thousands of women, no long profiles to read, no grammar mistakes to harrumph over, nothing but the essentials: picture, age, first name, and a fortune cookie.

If you’re interested only in hook-ups, there’s a mathematical strategy for maximizing hits: Swipe right for everyone. This works when you think about dating the way a shark thinks about eating.

But if you’re looking for love—or simply good company—you’re in for “Hot or Not?” the video game. And, like any gamer, you need a winning strategy.