In this game there is a grid and some blocks for you to put into the grid. The aim is to put the blocks into the grid to fill the lines, horizontally or vertically. When a line is filled, the blocks will be destroyed, giving you more room to put in more blocks. After you have put a block into the grid, a new block will be given. At any time of the game, you can have 3 blocks to choose from. The blocks are of different shapes and sizes, and you cannot rotate or flip the blocks when putting them. So it is crucial to choose wisely so that there are spaces left to put in other blocks. If there are no spaces left which can fit any of the blocks given, the game is over. The higher the number of lines cleared, the higher your rank.