If you've ever sat in a Cracker Barrel restaurant playing that little time-killing peg-jumper game they have on the table while you've waited for your meal to arrive, then you already know how to play Jumba. It is a marble solitaire game that whose object is to eliminate all of the marbles on the playing field by using one marble to jump over another, either horizontally or vertically, with the jumped-marble being removed from the board. Jumba spices up the game by providing a variety of marbles scattered throughout the games, that have their own quirks and actions. There are locked marbles, exploding marbles, marbles than can move more than one space, marbles that destroy others if they come in contact with them, etc. The shape of the playing field also changes as you progress through the game, as does the number of marbles in play at any one time, and the complexity of the game play. Graphics are clear, game play is smooth. There are controls for the sounds and music. This is fun little game for those times when you want to play a game, but you're just not willing to commit the time or attention to hidden object or time management or similar game. I initially had a problem playing this on my Vista computer, but found that if I made sure to install it as an administrator, it worked for me.