they don't give any explanation and you can't see any difference between the extra rewards in patent 2 and 3, when you buy patent 2 believing that you will get the extra prizes in all the events ( because, again, they don't say in what events will have extra prizes) then you have the notice of requires patent 3 to take bounty hunt extra prizes, and in the last event ( idk the name, the one with scorpion in the picture. when you need to chose a new finca and one of those 3 layouts) you don't have extra prizes in patent 2, only 3 and i believe we have some more.