Toys'R Us does not have the Set nor Duo for sell. But I found UNO H2O on sale with 20% off the tag price. Now I see why the owner of the cards prohibited us to bend them.
Set on Mobile, ver. 0.02.05 - something that can play with, finally.
To honor the SET Enterprises Inc., the icon use the original box design. To reserve more space, the patterns and card are smaller. Some statistics will be put on the right-hand-side later (such as # of cards remain/pick-up). The check algorithm is done. If I add a big loop into it, the computer should able to tell me the number of possible SETs on table. Still thinking about the difficulties, whether an easier game (or harder game) possible.