Streetpass Quest (known in America as Find Mii) is a game that comes pre-installed with every Nintendo 3DS system. It can be found in the StreetPass Mii Plaza and is one of multiple games in the plaza that make use of the system's StreetPass functionality. With it, players can go on an adventure and save their Mii. Gather heroes either by passing by other 3DS users or by using Play Coins. For 2 Play Coins, the user can hire a single hero (level 1-2). Hired heroes are either cats or dogs, depending on what pet animal the player says he or she prefers. They can earn unique hats by fighting their way through the game's levels and to the boss.