---
title: "I Spy Treasure Hunt: Play the Classic, Then Build Your Own"
description: "I Spy Treasure Hunt explained: the 1999 book, the 2001 PC game, and how to rebuild its riddle and map-piece loop as a phone hunt with virtual locks."
url: https://lockchallenge.com/blog/i-spy-treasure-hunt
markdown_url: https://lockchallenge.com/blog/i-spy-treasure-hunt.md
category: "Idées"
category_url: https://lockchallenge.com/blog/category/idees
tags: ["i spy treasure hunt", "treasure hunt", "scavenger hunt", "virtual locks", "kids games"]
author: "The Lock Challenge Team"
published: 2026-10-17
updated: 2026-10-17
reading_time_minutes: 7
site: "Lock Challenge"
site_url: https://lockchallenge.com
license: "Quotable with attribution and a link to the source URL."
---

# I Spy Treasure Hunt: Play the Classic, Then Build Your Own

I Spy Treasure Hunt is a search-and-find book by Jean Marzollo and Walter Wick, published by Scholastic in 1999 and turned into a PC game in 2001. Its real secret is not the nostalgia, it is a loop: solve a riddle, find the hidden object, earn a piece of the treasure map. That loop is easy to rebuild today as a phone-based treasure hunt, and I think it beats most "find 20 things on a list" hunts.

- 📖 **Classic decoded**, a 1999 book and 2001 PC game built on riddle, object, map piece.
- 🔁 **Loop that works**, every solved riddle pays out something physical you can hold.
- 🔐 **Free version**, one Lock Challenge lock with three steps rebuilds the loop at no cost.
- 🎯 **Pirate finale**, an Event Pass adds a filmed chest that bursts open with coins.

## What is I Spy Treasure Hunt, exactly?

I Spy Treasure Hunt is a children's search-and-find franchise with three lives: a book, a PC game and a jigsaw puzzle. All three take place in Smuggler's Cove, a seaside pirate town. Knowing which one you are looking for matters, because the search results mix all three.

### Where does the book come from?

According to practicalgeeks.com, the book came out in 1999 and was the last original I Spy title Jean Marzollo and Walter Wick made together. Unlike earlier I Spy books, it does not collect themed photos. It builds one place: Smuggler's Cove, photographed on a real sixteen-by-sixteen foot HO scale train set.

The craft is the point. Common objects such as a seahorse, scissors and a penny sit oversized in the scene, and some are disguised as parts of the town: a baseball becomes a water tank, a thumbtack becomes a satellite dish. The same page notes that the book's photos double as steps of a treasure hunt, so the reader is chasing a story, not ticking boxes.

### Can you still play the PC game?

Scholastic released I Spy Treasure Hunt on Windows in 2001, developed by Black Hammer Productions. Macintosh Repository, citing MobyGames, describes it as the sixth title Black Hammer made for the series. Every area you finish gives you a torn piece of a treasure map, and you drag the pieces together in a wax-sealed icon at the top right of the screen. There are three separate hunts, and the game picks one at random when you replay.

The game is now listed as abandonware on MyAbandonware (a 359 MB download), where commenters in 2025 and 2026 describe compatibility problems and a workaround involving WinCDEMU and Windows XP SP3 mode. Check the licensing situation yourself before downloading anything. The demand is real: a thread in [r/OldPCGames](https://www.reddit.com/r/OldPCGames/) asks whether the game can still be found anywhere, and the poster remembers hunting for those map pieces as a kid.

## Why does the I Spy treasure hunt loop work so well?

The I Spy treasure hunt loop pairs a small puzzle with an immediate, visible reward, and it repeats that pair until the treasure is assembled. Each step is short, each step is winnable, and the reward changes what the player holds in their hands. That structure is what you copy, not the pirate town.

**The reward is a piece of the finale, not a point.**

In the PC game, the reward for a solved riddle is a torn piece of map. The player can see the treasure getting closer. Compare that with a classic list hunt, where finding item 14 changes nothing about item 15.

### Is the same loop used in other kids' treasure hunts?

Yes. The French channel Les P'tits Curieux runs a quiz treasure hunt where children find the odd one out in paired pictures. A banana is the intruder among red objects, a domino among round ones. Each solved round hands out a prop (a compass, a spyglass) before the next round, and the final round reveals the treasure, a piece of Bamileke woodwork and beads.

Same skeleton, different puzzle: observe, answer, collect, advance. The same pattern shows up in the other videos I reviewed: Denver M7 posts a roughly 18-minute answer guide to the PC game, the Italian channel L'Arte si fa in quattro (Mister Bottone) explains how to run a rhyming-riddle hunt for children at home or outdoors, and CadoMaestro has a guide on how to organise a treasure hunt. If you want the research angle on play-based learning, the OECD's education pages at [oecd.org](https://www.oecd.org/) are a good starting point. For the hunt itself, one rule is enough: never let a solved puzzle pay out nothing.

### Why do most DIY versions fall flat?

Most home versions keep the riddles and drop the payout. The child finds the hidden object, a parent says "good job", and the next clue is just another slip of paper. I would rather write fewer riddles and make each one end in a reveal. For more clue ideas that keep the pace up, the list in [Treasure Hunt Clues for Adults](https://lockchallenge.com/blog/treasure-hunt-clues-for-adults) shows the same principle with older players.

## How do you build your own I Spy treasure hunt on phones?

You build an I Spy treasure hunt on phones by photographing a cluttered scene, writing a rhyming riddle about it, and putting the answer behind a virtual lock that opens the next clue. Lock Challenge is a tool that creates those virtual locks, shareable through a short link or QR code, with no player account required. The free plan gives you three locks at a time, up to three steps each, with unlimited players.

### What does a three-step I Spy lock look like?

Here is a version you can set up in an evening, in one free lock with three steps. Photograph a shelf, a toy box or a windowsill, and hide the answer inside the picture, the way Walter Wick hid a thumbtack in a satellite dish.

- **Step 1, numeric lock:** "I spy a pirate, a key and a shell. Count the gold coins that sit beside the key." The answer is a number the player reads off the photo.
- **Step 2, colours lock:** "I spy a lighthouse with stripes. Tap its colours from the top down." The answer is a colour sequence from a second photo.
- **Step 3, text lock:** "I spy a word on the old map. Spell what the pirate wants." The answer is a word hidden in the third photo.

The last reveal is a normal text or image message: "Look under the blue cushion, the map is complete." A free lock opens without any filmed animation. I would keep the photos on one theme so the three steps feel like one town, not three quizzes.

### How do you make the finale feel like opening a chest?

A filmed unlock animation turns the last answer into the treasure moment. For this theme the match is the pirate chest, whose coins burst out as the lid opens, with sound. The player types the final code, the chest creaks open on screen, coins spill toward the camera, and the reveal text appears inside the opened chest.

Lock Challenge is the only virtual lock tool whose locks open with filmed unlock animations. Films and the 36 celebrations come with the Event Pass or Pro, and a free lock opens without them. You can see the pirate version in the [pirate-treasure template](https://lockchallenge.com/templates/pirate-treasure), and the whole catalogue at [custom-virtual-lock](https://lockchallenge.com/custom-virtual-lock).

### Where do you start if you want a ready-made version?

Open the [treasure hunt demo lock and free hunt template](https://lockchallenge.com/treasure-hunt-generator), swap in your own photos and answers, and share the short link or QR code. For hiding the QR codes around a house or garden, [QR Code Games](https://lockchallenge.com/blog/qr-code-games) covers placement and the order of reveals. If your players are young, the 30-minute format in [Escape Room for Kids at Home](https://lockchallenge.com/blog/escape-room-for-kids) fits the same phone-only setup.

## Which I Spy treasure hunt version should you pick?

Pick the book or puzzle for quiet solo play, the PC game for nostalgia, and a lock-based hunt when you need a group, a location and a finish line. The table below compares what each version costs and where it falls short.

| Version | Format | Cost | Honest limit |
| --- | --- | --- | --- |
| I Spy Treasure Hunt book (1999) | Printed photos and riddles | Varies by seller | One reader at a time, nothing to find in the room |
| I Spy Treasure Hunt PC game (2001) | Point-and-click, 3 hunts | Listed as a free abandonware download (359 MB) | Compatibility fixes needed on modern Windows |
| 100-piece I Spy puzzle with 24 activity cards | Jigsaw plus card game, first to 5 cards wins | 316,000 VND at the High Museum shop (listed sold out) | Fixed pictures, small group around a table |
| Free Lock Challenge hunt | 1 lock, 3 steps, QR code or link | $0 | No filmed animation, no theme, personal and non-commercial use |
| Event Pass Lock Challenge hunt | Up to 10 locks of 10 steps, filmed pirate chest | $7.90 for 15 days or $9.90 for 30 days, paid once | Dressed locks stop opening to players when the pass ends |

SOURCE : MyAbandonware, Macintosh Repository, High Museum shop, lockchallenge.com plans · MAJ 10/2026

Two things in that table deserve a straight answer. The Event Pass dresses an event: the 51 themes, 49 filmed unlock animations and 36 celebrations all come with it. Running a recurring classroom league or a commercial game is Pro territory, at $14.90 a month or $99 a year. For a birthday hunt, the pass is the right size.

## So, is an I Spy treasure hunt worth building yourself?

Yes: an I Spy treasure hunt is worth building yourself if you keep the part that made the original work, the riddle that pays out a piece of the finale. My recommendation is to start with the free three-step lock above, test it on one person, and only then pay for the Event Pass if you want the chest to open on film.

### Which version should you build first?

Build the short one. Three photos, three lock steps, one reveal. If the players ask for another round before the cake arrives, you know the loop works, and you can stretch it into a longer trail with more locks. The loop was never about Smuggler's Cove. It was about earning the next piece, and any shelf in your house can do that.

## FAQ

### What is I Spy Treasure Hunt?

I Spy Treasure Hunt is a 1999 search-and-find book by Jean Marzollo and Walter Wick, published by Scholastic, set in the model town of Smuggler's Cove. A PC game based on it followed in 2001, and a 100-piece jigsaw puzzle with 24 activity cards exists too. All three revolve around finding hidden objects to follow a pirate treasure trail.

### Can you still play the I Spy Treasure Hunt PC game?

The 2001 Windows game is listed on MyAbandonware and a Mac version on Macintosh Repository, and people still ask about it on Reddit. Modern Windows often needs a workaround, such as mounting the disc image with WinCDEMU and running in Windows XP SP3 compatibility mode, according to a commenter on MyAbandonware. Check the licensing status yourself before downloading.

### How do I make an I Spy treasure hunt for kids at home?

Photograph a cluttered scene, write a rhyming riddle about it, and hide the next clue behind a lock. With Lock Challenge's free plan you get three locks, up to three steps each, shared by link or QR code, and players need no account. Add an Event Pass if you want the filmed chest animation at the end.

### Does a Lock Challenge I Spy hunt need printing?

No. The photos, riddles and answers live inside the lock, and players open it on their phones from a link or QR code. You only print something if you choose to hide QR codes around a room or garden.

### How much does it cost to add a filmed chest opening?

The Event Pass costs $7.90 for 15 days or $9.90 for 30 days, paid once with no subscription. It includes the filmed unlock animations with sound and the celebrations. A free lock still works, but it opens without them.

## Sources

- [The Joy of I Spy Treasure Hunt — practicalgeeks.com](https://practicalgeeks.com/photo/writing/treasurehunt/)
- [I Spy Treasure Hunt Retrospective — practicalgeeks.com](https://practicalgeeks.com/photo/writing/retrospective/treasurehunt/)
- [Download I Spy: Treasure Hunt (Windows) — myabandonware.com](https://www.myabandonware.com/game/i-spy-treasure-hunt-e4h)
- [I Spy Treasure Hunt — macintoshrepository.org](https://www.macintoshrepository.org/3878-i-spy-treasure-hunt)
- [I SPY Treasure Hunt 100pcs Puzzle — museumshop.high.org](https://museumshop.high.org/products/i-spy-treasure-hunt-100pcs-puzzle)
- [CHASSE AU TRÉSOR Qui est l'intrus — Les P'tits Curieux (YouTube)](https://www.youtube.com/watch?v=hCbNt9UgoYY)
- [I Spy: Treasure Hunt (ALL ANSWERS / ANSWER GUIDE) — Denver M7 (YouTube)](https://www.youtube.com/watch?v=BbYUz-QSB1g)
- [Come organizzare una super CACCIA AL TESORO per bambini — L'Arte si fa in quattro (YouTube)](https://www.youtube.com/watch?v=PjmTR1RA2DY)
- [Comment organiser une chasse au trésor ? — CadoMaestro (YouTube)](https://www.youtube.com/watch?v=WDN3IJg7-9E)
- [I Spy Treasure Hunt — r/OldPCGames](https://www.reddit.com/r/OldPCGames/comments/1u0lk94/i_spy_treasure_hunt/)
- [Lock Challenge custom virtual locks — lockchallenge.com](https://lockchallenge.com/custom-virtual-lock)