By turning these stiff, die-cut pages, even very young children can assemble a green monster with "two big yellow eyes...a long blue nose...[and] a big red mouth with sharp white teeth..." and then make it go away again, feature by feature. Emberley, a Caldecott medalist whose delightful drawing books demonstrate a combination of rudimentary forms to create a world of images, uses simple shapes in bright colors to build a scowling, cartoonish face that seems to float against the solid black field- -scary, but deliciously so. A satisfying game that may also allay some nighttime fears. (Picture book. 2-5)