Level 3: Puzzle Room

Official Raspberry Pi Project

This lesson is based on the official Raspberry Pi Foundation project. Open it alongside this guide to access the starter project, step-by-step instructions and community remixes.

How to use it: Click the link above, then click See Inside on the Scratch project to explore the finished version. Use Remix to get your own copy to edit.

What You Will Build

Build a room where players solve logic puzzles to unlock content.

What You Will Learn

By the end of this project you will be able to:

• Use Events blocks to start scripts and respond to clicks
• Combine Motion, Looks and Sound blocks to create behaviours
• Use variables to track game state and scores
• Apply the specific Scratch concepts introduced in Level 3

You Will Need

Step-by-Step Guide

1. Create a room backdrop with multiple puzzle elements.
2. Add 3 interactive puzzle sprites: a combination lock, a riddle box, a colour sequence.
3. Puzzle 1 (lock): player clicks digits to enter a code. If correct: broadcast [unlock1].
4. Puzzle 2 (riddle): show a text riddle. Player clicks the correct answer sprite.
5. Puzzle 3 (colour): sprites light up in a sequence. Player must click them in the same order.
6. Create a solved variable that increments each time a puzzle is completed.
7. When solved = 3: play a victory sound, show a door sprite opening animation.
8. Add a hint system: clicking a question mark gives a clue.
9. Add a timer that adds pressure to solve within 2 minutes.
10. Add a reset button that clears all solved states.

Extension Challenges

Try these after completing the main project:

• Add a fourth meta-puzzle that combines clues from the first three.
• Add inventory items found around the room that unlock puzzles.
• Create a second room that unlocks after completing the first.

Reflection Questions

1. Which Scratch blocks did you use most in this project?
2. What would you add or change if you had more time?
3. How could you reuse the ideas from this project in a different context?

Share Your Work

When your project is complete, click Share in Scratch and post the link to your class or the Techbase community.