Kre-O Cityville Invasion is the fifth line of Kre-O sets, based on the popular CityVille online game series.
In a partnership with Lady Gaga, virtual items such as a Lady Gaga Gyrosphere in CityVille, a Lipstick Gun in Mafia Wars and a Paws Up Statue for FrontierVille were available in RewardVille.
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In a partnership with Pizza Hut, a $5 or more donation to benefit the World Hunger Relief campaign gave players a choice of a Food Wagon for use in FarmVille, a Nutrition Center for use in CityVille, a Farm for use in Empires & Allies, or a Merino Sheep for use in The Pioneer Trail.