"Pop Island - Paperfield is a Nintendo DSi video game developed by ODENIS Studio. It is the sequel to Pop Island. It costs 200 Nintendo points, and can be downloaded at the DSi Shop. Pop Island - Paperfield is a capture the flag type game. The player's objective is to bring as many flags to their base as possible in a set amount of time, while trying to stop the opposing team from bringing flags to their base. The characters of Pop Island consist of 12 different animals and vehicles, such as a lion with wheels, surfing penguin, a fish, a skateboarding elephant and many others.
Paperfield offers a bonus for those who bought the previous title, as owners of both games can unlock three new maps and four vehicles, including a helicopter and a submarine."
Source: Wikipedia, "Pop Island - Paperfield", available under the CC-BY-SA License.