Gameplay is genuinely amusing, and trippy to describe: As you press your finger on the screen, a yellow smiley face begins to expand beneath it. The longer you keep your finger in place, the larger the face balloons. But if one of the tiny red dots that's bouncing around the screen crashes into your happy face as it's expanding, it pops. You need to grow enough faces to cover 67 percent of the screen to complete each level. If you run out of "lives" (the number of popped faces allowed), or "balls" (the maximum number of faces), you lose.