Free games › Mental Rotation
🧊 Mental rotation test online — free on Games140
Decide which figures are the same object seen from another angle — and which are its mirror image.
- Free to play
- No sign-up to start
- Coaching built in
- Play with friends in groups
How to play Mental Rotation
- A figure built from cubes is shown at the top.
- Below it are four more. Exactly TWO are that same object turned to a different angle; the other two are its mirror image.
- Pick both matching figures. Five figures in all.
Controls. Tap two options to select them, tap again to deselect. Submit scores all five.
Scoring
Score = how many of the five figures you match, and a figure only counts if you pick both rotations and neither mirror. Four or more is a win.
How a solver cracks Mental Rotation — the step-by-step method a plain program uses, worked through on a real puzzle.
Strategy tips
- Don't try to spin the whole figure at once. Follow the longest arm, then read the other arms relative to it.
- A mirror image has identical arm lengths and identical angles — everything matches except handedness. That is what makes it the good trap.
- Rotation can change everything you see about a figure EXCEPT its handedness. Check that first and you can often stop there.
What it trains
Mental Rotation is part of the Spatial group of games on Games140. Games140 is a set of free daily thinking games with coaching: you can play first and sign up later to save your streak, keep your level, or join a group with friends or family.