It's been a long time since FrontierVille was even a top Zynga game, let alone a top Facebook game. Despite that, developers are still rushing out FrontierVille clones like S.O.S., which replaces FrontierVille's Wild West theme with a tropical deserted island theme. In S.O.S., you slowly build a village, grow crops, and try to rescue other survivors (i.e., your friends playing the game) to join your tribe. While there have been other "castaway" themed games on Facebook, most of them have used fairly different styles of play.