Missing Letter is a gentle first-reading game. A picture sits on the wall of a little stall, a cat, a bus or a frog, and under it the word is spelled in chunky letter tiles with one gap. Three big letters wait on the counter: tap the one that fits and it flies into its place while the joey cheers. A wrong tap only makes a tile wiggle, and the right one soon starts to glow, so every word gets finished. The first words are short, like c-a-t, and the missing letter shows faintly in its gap, so children who can't read yet can match its shape. Later words get longer and the choices trickier. Every cleared stage moves the stall somewhere new and wins a new set of letter tiles.