- Level 5 - Easy
- Level 6 - Tricky
- Level 7 - Challenging
- Level 8 - Demanding
- Level 9 - Gruelling
- Level 10 - Mind Boggling
Happy Cube - 6-Pack
|Object||Make a cube out of the 6 pieces|
|Difficulty||Level 8 - Demanding|
This version of the Happy Cube Family series has a moderate degree of difficulty, and is suitable for ages 5 and up. The Happy Cube is the original design, created in 1986 by the Belgian inventor Dirk Laureyssens.
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