ZACK! is a strategy game that's delightfully addictive! Based on the concept of placing tiles to build bridges, each tile must match the color of adjacent pieces. It starts simply: there are four basic colors to the tiles. Building straight bridges is easy. You are also given the occasional joker that allows any color to be adjacent to the piece. As you progress, ZACK! first adds two more colors ? and, then, 60 ?combo? colors. It's a puzzle. It's strategy. It's addictive. It's ZACK!