"Where's My Water?" came out with four chapters - "Meet Swampy", "Troubled Waters", "Under Pressure" and "Sink or Swim" — each containing 20 levels. New chapters are rolled out with updates, each featuring new gameplay tools and supplies. A version for devices that have the Android operating system was released on the Android Market in North America on November 23, 2011 and included all six chapters available up to that point. A free, ad-supported version of "Where's My Water?" was also released to both iOS and Android in December 2011. The free version includes 25 unique levels, plus the ability to unlock five popular levels taken from the main game. In May 2012, a total of 20 levels that originally appeared in the free version were added to the full version, collectively known as "The Lost Levels". The levels in question are grouped into two holiday-themed chapters. June 2012 The update also included two new in-app purchases: the "Mystery Duck" mode (see below) and Locksmith Duck, which would unlock a chapter without having to collect a certain number of ducks within the main game. In connection, "Where's My Perry", a version of the game featuring Perry the Platypus from "Phineas and Ferb". On September 19, 2012, a new update brought a special Birthday Level, "Make a Wish", to Where's My Water and Swampy's 1 Year Birthday. 10 more Lost Levels were also added for free. An infographic of Where's my Water's history teased a new update with a black-and-white and Frankenweenie-based levels.