8.1. Introduction

The SpotOn game tests a user’s reflexes by requiring the user to touch moving spots before they disappear (Fig. 8.1). The spots shrink as they move, making them harder to touch. The game begins on level one, and the user reaches each higher level by touching 10 spots. The higher the level, the faster the spots move—making the game increasingly challenging. When the user touches a spot, the app makes a popping sound and the spot disappears. Points are awarded for each touched spot (10 times the current level). Accuracy is important—any touch that isn’t on a spot decreases the score by 15 times the current level. The user begins the game with three additional lives, which are displayed in the bottom-left corner of the app. If a spot disappears before the user touches it, a flushing sound plays and the user loses a life. The user gains a life for each new level reached, up to a maximum of seven lives. When no additional lives remain and a spot’s animation ends without the spot being touched, the game ends (Fig. 8.2).

Fig. 8.1. SpotOn game app.

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