Give someone the chance to feel like a genius from ancient Greece with the Project Genius Grecian Trick Lock Puzzle.

Inspired by the clever designs of Theodorus of Samos, this puzzle brings back one of history’s most secure locking mechanisms in a brain-teasing form.

It’s a great pick for anyone who loves solving things that look simple but aren’t!

You’ll receive a beautifully crafted lock and key, but turning the key won’t be enough...

This trick lock is full of surprises, and it’s up to the puzzler to work out what’s really going on inside! 

Great for ages 8 and up, this is a fun way to give someone a puzzle with a twist of history.

It looks great on display, feels nice in the hand, and delivers a satisfying challenge that doesn’t rely on screens or instructions.

  • Based on the original Greek warded lock design  
  • Includes metal lock and key with hidden trick  
  • Suitable for ages 8 and up with a 3/5 difficulty level  

Wrap one up for the curious mind in your life - it’s a clever gift that’s sure to get them thinking.

Peter and Anne-Maree
Hello from Peter & Anne-Maree

CoolThings Australia is a Australian owned & operated small business located in Launceston, Tasmania.

The CoolThings Australia mission is to help you be the coolest gift giver in your family and circle of friends.

You know the feeling you get when you give a gift and the response is "That's so cool!" - that is what its all about!

CoolThings Australia was started in 2003 by Peter and Anne-Maree and is still led by them to this day. Their purpose in business is to be givers themselves and they support multiple organisations close to their hearts locally, nationally and internationally.

Both Peter and Anne-Maree and their team of cool giftologists thankyou for your support and are looking forward to serving you today!

Project Genius Grecian Trick Lock Puzzle Reviews

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(5) Chris & Kerry - Verified Customer

My granddaughters absolutely loved the pillow cases they received. They were straight to colouring them and were so excited they take them every where they stay. ...

(5) Margaret Baker-Crooks - Verified Customer

I have given these puzzles to kids and adults alike. These are a great gift for any age....

(5) Rick - Verified Customer

The surprise on the recipients face said it all. Speedy delivery. Kept up to date whilst in transit It’s almost unlimited in all the cool things (pun intended) you can get, especially for those who like gifts that are unique I’m adding an extra star, even though I’m limited to 5...

(5) Rick - Verified Customer

The surprise on the recipients face said it all. Speedy delivery. Kept up to date whilst in transit It’s almost unlimited in all the cool things (pun intended) you can get, especially for those who like gifts that are unique I’m adding an extra star, even though I’m limited to 5...

(5) Sue - Verified Customer

I wanted 3 small cool gifts for my grandsons..so happy, they arrived on time. Hope the grandies love them....

(5) Janne - Verified Customer

Great service fast delivery fab game...

(5) neens - Verified Customer

I needed to make a last minute present for the family 'Santa re-gift' group which was a slightly stressful situation!! I had a look at coolthings and was so impressed with all the interesting items available. I made my purchase & received a confirmation email straight away & my order was received the next day. Thanks so much, great ...

(5) Joanne - Verified Customer

Fun stress reliever by pulling mice through holes in cheese. Stretchy. Speedy delivery. Great communication. Would buy again from this store. Many unique gifts to choose from....

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