
One Line 3D: Connect Shape
3D One-Stroke Drawing
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Free
With Ads
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About
The classic one-line puzzle evolves into the third dimension! One Line Puzzle 3D challenges you to connect all nodes in a complex 3D shape without ever lifting your finger or retracing your path.
Rotate beautiful geometric structures to find the right sequence. With 100 levels ranging from simple octahedrons to complex knots and crystals, this game will push your spatial reasoning to its limit.
Features:
- 100 levels of increasing 3D complexity.
- Beautiful, procedurally generated 3D geometric shapes.
- Intuitive touch controls for drawing and rotating.
- Minimalist and relaxing aesthetic.
- Helpful hint system for the toughest puzzles.
- Brain-boosting spatial logic challenges.
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What's New in One Line 3D
1.0.1
September 23, 2026
Fixed several known issues from the previous version, making the app more stable.


