Game: IncrediLand

Facebook is no stranger to games that let you raise cute little critters, and in a lot of ways IncrediLand is very similar to other games that already exist. You can feed, train, and play with strange colorful creatures, but the difference is the emphasis on breeding. IncrediLand features a surprisingly complex breeding mechanic that focuses on genetics, and creates a rather addictive experience as you attempt to collect every animal there is.