Lego Bad Piggies is a LEGO franchise based on Bad Piggies.
Starter Pack- 5.00 USD @ Target, 6.55 @ Walmart.
Tusk 'Til Dawn- Target exclusive set, 7.99, Only available in October.
Ground Hog Day- Available anywhere, for 5.99.
Freckled Pig and Eggs- Mini-set, 1.00
Those were the first 4 sets announced at ToyFair 2015.
Each set comes with some Technic axles, So things like Wood snap together.
Each set comes with 1 or 2 pigs.