The Big Green Help Global Challenge (PC Games, 2008)

In the downloadable "Global Challenge" game, kids have to "green" the last three pollution-free cities on the planet. To play, kids can choose from four Nicktoon characters--SpongeBob SquarePants; Back at the Barnyard's Otis; The Fairly OddParent's Timmy Turner; and Avatar's Aang--and partner with up to three other players in a face-off against CO2-spewing monsters. As kids defeat monsters like the Carbon Creeper, Waste Whirlwind or Guzzlor and move through nine game levels, they will get tips about how to lower their carbon footprint. At the end of the game, kids will be directed to www.nick.com/biggreenhelp where an online meter will measure their individual commitments and the impact of their collective pledges.