Smiley World Island Challenge offers gamers an assortment of activities starring the familiar contented yellow circle. The mini-games are designed to have an arcade feel to them, with players using their stylus and touch screen to take on puzzles of skill and logic one minute, then run and jump through classically styled side-scrolling platform levels the next. Levels are filled with "Smiley coins" that can be used to pay tolls, unlock secret areas, and collect buried treasure, and each event offers bronze, silver, or gold medals which must be acquired in order to win the coveted Smiley Trophy. The mini-games in Smiley World Island Challenge also include multiplayer modes, letting friend square off in either turn-based or head-to-head contests.