Free Halloween classroom puzzle pack: 5 code-cracking puzzles
Five spooky puzzles, from a 30-second warm-up to a 10-minute brain-burner. Print them or project one, then your class types the code into a real digital lock that opens when they are right.
8 pages · answer key included · free for classroom use, please don't resell
Try puzzle 1 as a real lock
The Pumpkin Patch, the easy one. Four failed tries, one 3-digit code. Your lock asks the same question and opens on your own reveal. This demo is dressed in the midnight look, with the filmed cauldron and the pumpkins, and you can dress yours the same way.
Mission: the farmer locked the pumpkin patch. Use the four failed tries to crack the 3-digit code.
- 690 · nothing is correct
- 625 · nothing is correct
- 736 · 2 digits are correct and in the right place
- 851 · 1 digit is correct and in the right place
Puzzle 1 · The Pumpkin Patch
🎃 Crack the 3-digit code
Wrong answer, try again.
What is in the pack
Puzzle 1 · Easy
The Pumpkin Patch
3-digit code · Logic from four failed tries
Puzzle 2 · Easy
The Haunted House
6-letter word · A riddle with a trap
Puzzle 3 · Medium
Monster Candy Count
3-digit code · Number sense: sums and doubles
Puzzle 4 · Medium
The Ghost Maze
Arrows · Shortest path, no sticky webs
Puzzle 5 · Hard
The Witch's Spellbook
4-digit code · Deduction from five failed tries
Answer key
Every code, the reasoning and the trap students fall into. Teacher eyes only.
How to use it in class
- 1
Print or project
Download the PDF and print the puzzles, or project one as a warm-up. Each page has room to work, and the answer key explains the trap in every puzzle.
- 2
Make the codes real locks
On Lock Challenge, pick the lock that matches the code (number, word or arrows), paste the puzzle and write what your class sees when it opens. Add a filmed opening, a cauldron or a creaky coffin, and a Halloween look.
- 3
Share one link
Students open the link or scan the QR code on any device, with no account. The lock shakes on a wrong code and opens on the right one.
💡 Classroom idea: the candy vault
Put one puzzle on each table. The five codes, in order, unlock a final "candy vault" lock, and the fastest team gets first pick of the candy bowl.
Questions teachers ask
Is the Halloween puzzle pack free?
Yes. The PDF is free to download and to use with your class. Please don't resell it.
Which grades is it for?
Grades 3 to 8. From about 30 seconds for the easy ones to 10 minutes for the hardest.
Is there an answer key?
Yes, on page 7, with the reasoning for each code and the trap students fall into. Each code was checked so exactly one answer fits.
Do students need an account to open the digital lock?
No. Students open a link or scan a QR code on any device. Only you need an account to publish a lock.
Can I make all five puzzles into a single game?
Yes. The candy vault, five puzzles and a final lock, is one game of 6 steps that your class plays from a single link. You can build and preview it before paying anything. Players never pay and need no account. See current plans and features on the pricing page.
More for class: free digital escape rooms for teachers.