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Mental Rotation

Two views of a shape. Is B the same shape turned, or its mirror image? Decide fast.

20 shapes · flat shapes first, then 3D cube stacks

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Mental Rotation

Twenty pairs of shapes. Is B the same shape as A, turned, or its mirror image? Flat shapes made of squares come first, then 3D stacks of cubes. Fast right answers earn a bonus.

20 shapes
Spatial reasoning

How to play

Compare A and B. Turn A in your head until it lines up with B.
Same or Mirror. Same if a turn makes them match; Mirror if only a mirror image would. S/← or M/→ on a keyboard.
Be quick. 10 × level per right answer, plus up to 10 for answering within 4 seconds.
Climb. Flat shapes with quarter turns, then eighth turns, then 3D cube stacks.

Quick tips

Find an anchor. Pick a distinctive end or corner of A, such as the yellow square, and find it in B first.
Then follow the arm. From the anchor, check which way the next part goes: left or right of it.

3 more tips in the Mental Rotation guide →