React has a strong Tetris feel but is totally origional, the object of the game is to arrange blocks which fall from the top of the screen into groups and make them React with key blocks, to create Reactions and massive chain Reactions, breaking the blocks down into water blocks, which are cleared by draining them off the bottom of the screen. water blocks push down other blocks over time, stopping you from blocking yourself off, the more water blocks you have in each column the quicker the columns push down