Slowly, your stack of blocks grows from the bottom, and you've got to make sure it never reaches the top. Because, once it does, you lose! To eliminate blocks from the stack, line up at least three of one color, horizontally or vertically. Once you do, those blocks disappear, and put off slightly your inevitable demise. To add to the excitement, chunks of red garbage will fall from above. It is impossible to eliminate this garbage directly. However, if you eliminate any blocks which are touching the garbage, the garbage will shatter into normal, run-of-the-mill blocks.