The game lets iPhone and iPod Touch users explore and discover items in the game's fantasy world by navigating the actual, real world around them. Players can collect 1,000 weird and wonderful items in three unique ways - GPS mode to explore the real world; searching for Gifters in the game world using registered real-world Wi-Fi hotspots; and interacting with the virtual game world.

Alex Galvagni, CTO and senior VP Global Product Development at Glu Mobile, said: "The app integrates the players and their real-world locations with the game itself, making the player's actual location an essential part of the game."

The goal is to search for virtual items that encompass a wide range of fun characters and gifts that players discover through a combination of physically travelling and exploring the world around them, as well as by seeking out Gifters. These are special characters that appear in the virtual world, depending on the location of Wi-Fi hotspots in the actual, real-world location.

For example, when performing a search within the game, players might find a list of local cafés or hotels with hotspots near them. Each hotspot will create a character in the game, which in turn will provide a new item.

Activating the GPS mode while on the move will reveal a map of the player's current location covered with collectable gifts. Walking towards a gift will add it to the player's collection. The gift could be anything from a half-eaten jam sandwich to a monkey with a typewriter.