FarmVille may soon be releasing the new feature the Ultimate Treehouse. Players will build this new feature building by asking and collecting materials from friends and neighbors. This will have 4 stages and each completed stage will have a corresponding reward.
Collect 8 Arborist Signatures
Reward: Architect Pig
Collect 4 Sustainable Wood, 4 Energy Saving Window and 6 Scaffolding
Reward: Construction Worker Cow
Reward: Tree Climbing Goat
Collect 10 Hot Tub Components, 15 Solar Heaters and 15 Sauna Parts