Nim is a mathematical game of strategy in which two players take turns removing objects from distinct heaps.

• Player must take one or more objects.
• Taken objects must be form the same heap.
• The player who takes the last object loses the game.
• Players take turns.

• Click on the heap as many times as you want to take objects from it.
• To take 3 objects, click 3 times on the heap.
• You can right-click or long touch on the heap to put object back when you make a mistake.
• Right click can be used to take all objects as well.
• If you want to change the heap, just click on another.
• When you are done with removing objects, click on the button in the center to confirm.