In this puzzle platformer game, players must navigate through obstacles and reach the exit portal by shrinking and growing their characters. To begin, press "enter" or "space" on the keyboard or use the onscreen buttons on touch devices. Use the left and right arrow keys to move characters and the up arrow to jump. To reset the level, press R. To return to the previous screen, press B. Enter the green and red portals to shrink or expand your character. Grow bigger to jump higher or push larger boxes, and shrink to fit through small gaps. Alternate between big and small sizes to overcome obstacles and reach the purple portal. This game combines problem solving, perseverance, handling complexity, trial and error, and testing ideas, making it a challenging and entertaining experience. It falls under the puzzle and platformer game categories.