Please read carefully:
All of the games on this site are in zip archives and in the format jar (not jad)
To open these with you will need JZipMan (which you can download HERE) Download and install to your phone.
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Alternatively, you can unzip these files online, at this website: Wobzip Just copy the url for one of the games and paste it at wobzip...and then you can download.
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For s60v3 users, you can download Zip Manager.