Christmas Spot the Difference is a spot the difference game for kids: two cosy Christmas pictures sit side by side, but a few friendly things have changed. Spot the street lamp that switched off, the red present that turned blue, the bell that became an ornament, the missing star or the snowman who wandered away, as you visit a snowy meadow, a cosy village, a pine forest, a frozen pond and a winter market. Penguins, a polar bear, a fox, gingerbread friends and a reindeer join in along the way. The first changes are big and easy for four-year-olds, then they slowly get smaller and trickier for older children. A gentle hint helps if someone gets stuck, and every place cleared wins a new hat for Wombat. It is quiet practice for looking closely and noticing details, with no clock and nothing scary.