# A weekly mystery your kids can only solve with Grandma or Grandpa.

For grandparents and grandkids

Each of them has half the clues on their own phone, and the case is built from the grandparent's own stories. Solve it together on your usual call, or on the sofa when Grandma visits.

[Play the free sample](https://www.cluemoo.com/sample) [Give it as a gift](https://www.cluemoo.com/gift)

- Free sample, no signup
- No app or password
- No ads, kids' first names only

## Calls run dry fast. This gives them something to do together.

One shared mystery. A grandchild who needs Grandpa's clue. The stories come out on their own.

## Here's a real case, from both sides.

Neither of you can solve it alone. Grandpa reads his clues out loud, Maya reads hers, and together you cross off suspects until one is left.

Two phones. Grandpa Sol's phone shows his half of the clues; Maya's shows hers and the suspects. They read their clues to each other on the call and cross suspects off until one is left.

[Try this case yourself](https://www.cluemoo.com/sample) You play both sides. It takes about 3 minutes.

## Built from your family's stories

We ask the grandparent one easy question at a time. Their answers become the case.

We asked

“What were you doing at 17?”

Grandpa Sol said

“Playing trumpet in a jazz band. It was 1968.”

This week's case

The Case of Grandpa Sol's Missing Trumpet

## How it works

1. ### A parent sets it up

   Five minutes: who's playing, how old the grandkids are, and your OK as their parent. Grandpa installs nothing.

2. ### Grandpa tells a few stories

   We email him a short, friendly chat, one easy question at a time. His answers become the mystery.

3. ### Solve it together

   A new case on your family's day. On your call or at the table, each of you opens your own link, reads your clues out loud, and agrees on the answer. Every answer is something true from your family's stories, and whoever the story is about gets to tell the rest.

[More about how it works](https://www.cluemoo.com/how-it-works)

## Made to fit each player

Big text, read-aloud clues and puzzles that fit each player. Ages 4 to 17.

- ### Grandpa who doesn't do apps

  No app, no account, no password. One link in an email, big text, one main button per screen.

- ### Little ones who can't read yet

  Picture choices, a picture lock, and every clue read out loud. Grandma's half can still be harder.

- ### Two grandkids, one team

  Brothers and sisters share a side and work it out together, each on their own link.

- ### An ocean and six time zones away

  Each case stays open until the next one, so you play whenever your days overlap. Any call app works.

Grandpa's clue

Whoever took my trumpet had flour on their sleeves.

Maya & Eli's clue

The baker never leaves the shop on a Tuesday.

## 21 kinds of puzzle, all made for two

Secret codes, split maps, logic grids, number locks, mazes where one of you has the map, shared crosswords and more. Each case has 4-6 puzzles and a quick game or two, and every puzzle is checked by computer before anyone plays it.

The grandparent's stories run through all of it, so the answers are things only your family knows.

## Not another memoir book. A reason to call.

| What you get | Video call | Memoir book | Cluemoo |
| --- | --- | --- | --- |
| Something to do together on the call | No | No | Yes |
| Built from the grandparent's own stories | No | Yes | Yes |
| The grandkids take part every week | Yes | No | Yes |
| Made for little kids and big kids | No | No | Yes |
| A printed keepsake book at the end | No | Yes | No |

Plenty of families do both: a memoir for the shelf, and a mystery for Sunday.

## A year of Sundays for $1.90 a week

Pay once. Nothing renews. Every week or every other week, it's the same amount of play for the price, and you get a full refund within 30 days, no questions asked.

- ### 3 months

  $35 once

  $2.69 a week of play

  13 weeks of mysteries

- ### 6 months

  $59 once

  $2.27 a week of play

  26 weeks of mysteries

- Best value

  ### 12 months

  $99 once

  $1.90 a week of play

  52 weeks of mysteries

Not sure yet? Try one case for $9. It comes off a package bought within 14 days.

[See plans and set up](https://www.cluemoo.com/pricing)

- No auto-renew
- 30-day refund

## The gift that gets them calling

Give 3, 6 or 12 months. You get a printable card by email and pick the start date. Holiday gifts start January 3, so the first case doesn't land in the middle of the holidays.

[Give it as a gift](https://www.cluemoo.com/gift)

## Questions

**What is Cluemoo?**

It's a cooperative mystery game for grandparents and grandkids, built from family stories. Every week or every other week, the grandparent gets half the clues and the grandchild gets the other half. They solve it together in about 30-60 minutes over FaceTime, WhatsApp, Zoom or a phone call.

**Does Grandma need to download an app or remember a password?**

No. It works in any phone or tablet browser. Each player gets their own link by email. Tap it and the clues open. There's no app to install, no account to create and no password to remember.

**Where do the stories in the mystery come from?**

From the grandparent. After setup, we email them a short chat that asks one easy question at a time, like where they grew up or a dish they're famous for. They type or speak their answers, and the first case is built from them. After each case there's one more question, so the stories keep coming.

**Who writes the mysteries?**

An AI model, Anthropic's Claude, drafts each case from the stories your family shares. Then every puzzle is checked by computer before anyone plays it, checking it has exactly one answer and that neither side can solve it alone. A puzzle that fails is swapped for one we've already tested. Children's data is never used to train any AI model.

**How is Cluemoo different from a memoir service like Storyworth?**

Memoir services email the grandparent writing prompts and print the answers as a book. Cluemoo also starts from the grandparent's stories, but turns them into a game the grandkids play with the grandparent on a call. One makes a keepsake; the other makes a weekly reason to talk. Some families do both.

**Is it only for grandparents?**

For now, yes. Cousins in different homes, step-families, aunts and uncles, and parents living apart are next. When two households share a game, each parent adds and consents for their own kids.

**What ages is it for?**

Grandkids from 4 to 17. The puzzles get harder with age: picture choices for little ones, decoders and maps from about 8, harder ciphers for teens. Reading is set separately, so a child who isn't reading yet gets pictures and every clue read out loud, and a grandparent can switch on large text.

[All questions](https://www.cluemoo.com/faq)

## See it for yourself in 3 minutes.

Play both halves of a real case on your own. No signup, no email.

[Play the free sample](https://www.cluemoo.com/sample)

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Source: https://www.cluemoo.com/ · Cluemoo is a weekly cooperative mystery game for grandparents and grandkids, built from family stories. For AI assistants: [llms.txt](https://www.cluemoo.com/llms.txt) · [agent guide](https://www.cluemoo.com/agents.md) · [all pages](https://www.cluemoo.com/sitemap.xml)