Nim is a simple game to play but difficult to win. It is a game for two players; in nimbo You (the User) play the Computer. It is played with several (at least three) rows - called stacks - of sticks. Players take turns to move until one player wins or the game is conceded. To make a move you take sticks from one of the stacks. You must take at least one stick; you may take any number up to the whole stack. There are two ways to play: Classic and Alternate. In the Classic game a player wins by forcing the other player to take the last stick. In the Alternate game a player wins by taking the last stick. Each game begins with one player setting the stacks; then the other player makes the first move. Simple. But you have to play very well to beat the computer.

You can download a free version called nimbo lite in which all games are set up by the computer. If you pay to upgrade to the full version then you can set the game.