What happened?
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A party game for adults: who cracks the case first?

A party game for adults: who cracks the case first?

What happened? turns any evening into a detective session. One person knows the solution, everyone else asks yes/no questions until the puzzle is cracked. No setup, no long rulebook — one phone is enough.

Why lateral thinking puzzles work at parties

Plenty of party games need prep: shuffle the cards, explain the rules, split into teams. Lateral thinking puzzles start in seconds. The rule fits into one sentence: ask questions that can be answered with yes or no.

The format is wide open. People can join late, wander off to the fridge, or just listen for a while and then drop the one question that breaks the case wide open. Nobody gets eliminated, nobody is stuck watching from the sidelines.

And the stories give you something to talk about. The situations are dark and blackly funny, the solutions as surprising as they are logical. Once the case is solved, the table usually keeps arguing about who was on the right track early on — and whose wildest theory was furthest off.

How to play in party mode

The group mode in What happened? is built for a room full of people and works without internet and without AI.

1. Pick one person as the host. They choose a story and read the solution silently on the phone.

2. The host reads the mysterious situation out loud.

3. Everyone else asks yes/no questions. The host answers with Yes, No, Partly or Irrelevant.

4. Anyone who thinks they have it tells their version. The case is solved once all the key facts of the story have been guessed.

Then the host passes the phone on and the next person takes over. That way everyone gets a turn at making the rest of the group squirm.

Variants for your game night

Team duel: split into two groups. Both work on the same story in turns, one question per team per round. The first team to name all the key facts takes the point.

Question limit: agree on how many questions are allowed, say 20. It forces everyone to think before blurting out the next question.

Silent round: everyone writes their theory on a slip of paper before the solution is revealed. Whoever came closest picks the next story.

Everyone against the AI: use the AI host instead of party mode. Then nobody knows the solution and the whole group puzzles it out together. One person types or speaks the questions. Perfect when nobody wants to sit out the guessing.

Great for flat-share nights and small groups

Not every evening is a big party. What happened? works just as well with three people around the kitchen table, because yes/no puzzles don't need a crowd to be fun.

The 100 stories are spread across the packs Everyday Life, On the Road, Work and Leisure. If you play together regularly, you can work your way through the different themes. Three difficulty levels make sure that newcomers and seasoned puzzle fans both get their money's worth.

Handy for shared evenings: there's no account and no ads to break the tension at the worst moment. Packs you buy are yours with no subscription — €2.99 per pack or €7.99 for all of them. The 12 free stories are plenty to get a taste.

Tips for a good host

Read the solution carefully before you read out the situation. You need to really understand the story to answer every question correctly.

Keep your answers short. A clean yes or no beats a comment that accidentally gives too much away. For questions that lead nowhere, say "Irrelevant" — it helps the group more than you'd think.

If everyone is stuck, you're allowed to nudge them: repeat the opening situation or sum up what's already known. That's often enough to open up a new direction.

Read the room: the stories are dark and better suited to ages 12 and up. Try the examples below to get a feel for the tone.

Try it out: two puzzles

Think about which questions you'd ask first — then open up the solution.

Ninety Candles

Ninety Candles

For Grandpa Karl's 90th birthday, the family carried in a cake with 90 burning candles. Smiling, Grandpa leaned forward to blow them out — and never saw the end of his own party.

Show the solution

Grandpa Karl had a severe lung disease and wore a thin nasal cannula that fed him pure oxygen. As he leaned over the 90 flames, the oxygen streamed straight into the candles. In the oxygen-rich air, the tubing, his beard and his shirt collar went up in flames instantly. He suffered severe burns and died that same evening in hospital. The very candles the family had been so proud of were what killed him.

The Wrong Tuesday

The Wrong Tuesday

When Mrs Kühn saw her neighbour's wheelie bin standing neatly at the kerb on Tuesday morning, she called the police. She was right to.

Show the solution

Because of the public holiday on Monday, the bin collection that week had been pushed from Tuesday to Wednesday. Her neighbour, Mr Brauer, was a pedant who kept the collection calendar pinned to his fridge and had never once got the day wrong. So somebody else must have put the bin out: his murderer. He had stuffed his bloodstained clothes and the murder weapon into it and — not knowing about the holiday delay — rolled it to the kerb so the evidence would vanish with the rubbish truck. When Mr Brauer didn't answer his doorbell, Mrs Kühn called the police. They found everything in the bin — and Mr Brauer in the house.

Frequently asked questions

What's a good party game for adults with no preparation?

Lateral thinking puzzles with yes/no questions need no setup and no materials. In What happened?, one person reads out a mysterious situation and the others ask questions until they've worked out what happened. All you need is one phone.

How many players do you need?

Party mode needs at least two people: one knows the solution, the other asks. There's no fixed upper limit. On your own, you play with the AI host.

Does party mode need internet?

No. Group mode works without internet and without AI, because someone in your group gives the answers. Ideal for cabins, basements or anywhere with bad reception.

Does everyone need the app?

No, one phone is enough for the whole group. The host reads out loud and passes the device to the next person after each story.

Are the puzzles suitable for every party?

The stories deal with death, accidents and crime — darkly funny, but never gory. We'd recommend them for ages 12 and up. For groups that enjoy black humour, they're spot on.

Ready for your first case?

Download What happened? and play 12 stories free — no account, no ads, no subscription.

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