Free Nim Game - Version 1.2.5 Free Nim Game is a simple mathematical game of strategy in which players remove matchsticks in an attempt to force the other player to remove the last one. In one move, you can remove any number of matches but only from one row. If convert the number of objects in each row into binary numbers and XOR them, the game is over and you are win. Free download this Nim Game and play Nim against your computer!