They’ve been pretty generous in my opinion, as the free version includes 25 levels picked from the paid version (sorry, no new content). You’ll find 15 levels from Ground Hog Day, and 5 levels in When Pigs Fly and Flight in the Night respectively. The rest of the levels are locked, so you’ll need to buy the full app to gain access.
Also, if you’re interested in trying out tons of parts and building crazy contraptions, you can purchase the Field of Dreams Sandbox level for $2.99 (if you plan to upgrade, this is probably better to do after you purchase the full version). We have some details about Field of Dreams in an older post, as well as a walkthrough if you’re looking to nab all those star boxes.
Whether or not the free version will ever receive updates remains to be seen. Rovio hasn’t really been updating the free versions of their games as of late, so I wouldn’t expect too much. Regardless, it’s hard to complain when starting out with 25 free levels! If you haven’t played Bad Piggies yet, bust out your iPhone or iPad and give it a try! Now’s the perfect time to see if Bad Piggies is something you’d like to play more of. We bet you do!