Originally Posted by OutSpoken
Good question, why arent these 'Angry Birds' games universal?
Because they aren't required to be. So they can make more money with two versions.
Same reason the Seasons is a different game when it is really just a level pack for the original. So is Rio and even Space and Star Wars but the movie tie ins get a pass because the licensing deal would never allow just a 'pack' treatment
These free and paid versions should not be allowed either. Do it via IAP. But Apple didn't force that from the start and won't risk pissing off folks now. It's one of many things that's just wacked in the system.