Animated memory: moving arrows

This online memory game is really difficult!

Moving arrows are hidden behind the cards: They look the same, but it depends on how they move.
Diagonally, in a square or triangle, in the same direction or in the opposite direction …

At first try with just a few cards.

This is quite difficult – because of this, gravity and springs are initially switched off. The cards stay in their place as in the classic memory game.
If you want it to be a bit more difficult, for example, turn on the gravity again, then the cards always fall down as soon as you have found a pair, which then disappears.