VayLoLo

The Mind Reader

Think of any object, animal, or thing. I'll try to guess it by asking up to 20 yes/no questions!

  • ✓  Think of any object, animal, or place
  • ✓  Answer my yes/no questions honestly
  • ✓  I'll try to guess it in 20 questions

What is VayLoLo?

VayLoLo is an online version of the classic 20 questions game. Think of any object — an animal, a household item, a food — and VayLoLo will try to guess it by asking up to 20 yes/no questions. It's free, requires no account, and can be played in English, German, and Turkish.

How Does It Know?

No magic, no telepathy: VayLoLo uses a knowledge matrix holding the answers of thousands of objects to hundreds of questions, and in every round it mathematically picks the question that best separates the remaining candidates. It also learns from every game — objects it can't guess get added to the system, so the game gets smarter every day. Curious? We explain how it works; see how to play for the rules and the FAQ for anything else.

Challenge Your Friends

In challenge mode, pick an object and send the link to a friend — let's see whose object VayLoLo guesses in fewer questions. Whoever finds the hardest object wins!

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