Update (December 2, 2012): This page used to have an awesome Set applet which I created back in 2001 when Java was cool. I recieved a copyright infringement notice from the wonderfully named Bree Pop, Vice President and and Counsel at Set Enterprises Inc., all of which is both unfortunate and also kind of flattering: they saw my applet!
Click the letter to read.
I'll leave the instructions here for historical purposes.
Click the "New Game" button to start.To highlight a card, click on it. Click on highlighted cards to dehighlight them. Highlight three cards to select a set. If the set is valid then it will be added to your sets. If it was not valid, then the last set you found will be reshuffled back into the deck. If you can't find any cards, then click on "Deal" and three more cards will be delt out. Clicking on "Deal" again shuffles all fifteen visible cards back into the deck and redeals out another twelve cards.
Playing with two players is exactly the same as playing with one player,
except that player 2 selects cards by right clicking on them, instead
of left clicking. The applet keeps track of player 2's sets just like player
1.
Adrien Treuille
Computer Science and Engineering
University of Washington