If you are determined to risk searching forums for a "Bad Piggies Full Game Activation Key," follow these safety rules:
When you enter a key, the game attempts to contact cloud.rovio.com . Since these servers are offline, the activation fails even with a valid key. Bad Piggies Full Game Activation Key
When Bad Piggies was first released for PC, it was a paid title that required an activation key to unlock the full experience. If you are determined to risk searching forums