Classic Australian solitaire where the deck only has Hearts, Spades, and Diamonds.
All games are free to play and fully functional.
There are no hidden cards on the table. Also you are not restricted in which columns to move so long as the stacking cards match (same suit and down by rank - so the 7 of hearts can go in the 8 of hearts).
Along with the classic version there are three variants:
RELAXED - Allows any card (not just Kings) to be placed on an empty cell.
3-CARD - Allows unlimited cycles through the deck three cards at-a-time.
RUSH - Allows three passes through the deck. First 3 cards, then 2 cards and finally 1 card at-a-time.