Rovio has built a cute website for their newest game, Bad Piggies, only that the phone requirements to play Bad Piggies are missing.
While the game works fine on iPhones, even 3GS, Android users are lacking information.
Google Play is only displaying that Bad Piggies require at least Android 2.2 and 34 Mb of free space (on the SD card).
If you have a smartphone connected to your Google Play account, you should see if the game is compatible with your device or not.
From my experience, Bad Piggies is displayed as incompatible with my Samsung Galaxy Mini that still has Android 2.2 Froio. It has a 600 MHz processor.
As an advice, if you plan to play Bad Piggies, you should get a smartphone with at least 1 GHz processor, single core even and with a good amount of free space as 34 Mb could cause errors on smartphones with tiny internal memory.