To win in this game you have to do all the yellow blocks green. To do this, drag the green block to yellow. Remember that you can not pass through the red blocks. Purple blocks turn green in yellow if you specify them. Happy Blocks, puzzle game, block puzzle, color matching, arcade game, HTML5 puzzle, 2D puzzle, one player, brain teaser, strategy game, color transformation, yellow to green, red blocks, purple blocks, online puzzle game, free puzzle game, mobile puzzle game, easy to play, addictive puzzle