Mod-3 is played with two card decks without aces. Goal of the game is to put all cards on the top three rows. In those you have to build sequences of the same color. In the first row you have to create the sequence 2-5-8-B, in the second row the sequence 3-6-9-D and in the third row the sequence 4-7-10-K. The suit of the cards has to be the same in each sequence, so you can put a five of hearts only on top of a two of hearts.
The fourth row is waste pile and playing pile at once. On an empty slot you can put any card from the first three rows or one of top of the fourth row.
If you can't move any more cards, you can get new cards on the fourth row in clicking on the talon.
[auto drop] is disabled for this patience.