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I was looking for a game series on Android to play from the first release 'til latest. I then found myself looking at the Zenonia series. Both 1 and 2 are paid which is understandable but 3 and 4 are mysteriously free. Can anyone give me the "catch" as to why these two releases are free?

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3 and 4 have in-app virtual good purchase money making model. – SS-3 Aug 7 '12 at 10:42
Is there a fully paid version without those freemium things? – Propeller Aug 7 '12 at 11:18

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