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) Anonymous - Verified Customer

So easy and efficient to use ... goods arrived in a timely manner and well packaged. Grandkids love the gear!!...

(5) Anonymous - Verified Customer

Love, love, love my orders! Just did my second order and the products are exactly as pictured and great quality and the service updates and quick shipping are a plus. The range is so great, got presents for a 4 year old, 40 year old and a 70 year old in the same shop. Highly recommend...

(5) Anonymous - Verified Customer

Love Cool Things! A very prompt and reliable service, great selections of gifts from educational to quirky Love shopping here!...

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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) Anonymous - Verified Customer

Excellent. Productive was exactly as described; arrived within an acceptable timeframe; I was kept informed of the delivery progress....

(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) Jodie - Verified Customer

Love every bit of this company. Customer service was beautiful. Shipping was fast and all was good...

(5) Michelle - Verified Customer

Cool things have a great range of unique gifts for people of all ages. It is fun to browse and I have found their delivery is prompt and the website easy to use...

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