Montana, the game:

Welcome to MontanaPHP! Click on New Game to start.   New Game | Shuffle | Undo Move Count: 0

Montana, the rules:

Montana is a pretty simple solitaire-type card game, but a highly effective time waster, nonetheless. You have been warned... :)

The goal of the game is to organize the cards by suite and number into neat little rows, one suite per row and cards of the suite in ascending order from left to right, for example:
    hearts: 2 3 4 5 6 7 8 9 10 J Q K
    diamonds: 2 3 4 5 6 7 8 9 10 J Q K
    etc.

You can move cards only into the empty slots. The card you can put into an empty slot must be in the same suite and one number higher in order than the card on the left side of the empty slot. If the empty slot is on the leftmost column, you can move any 2 card into it. K cards are the highest cards, so if there's a K to the left of an empty slot, you can't move any card in that slot.

You can move the cards by simply clicking on them with the mouse. The clicked card will not move, if it doesn't "fit" into any of the empty slots, and you will get an error message about it too. If the clicked card does fit into an empty slot, it will jump there and it's former position will become an empty slot. There's also the "Undo" button, which undoes (only) your last move when clicked. Note that the button doesn't undo a shuffle (see below). NOTE: undo has not been implemented in this PHP version of the game.

Eventually you will get stuck, when all the empty slots end up "in front of" the K cards. At that point you can click the "Shuffle" button which a) locks already correctly organized cards (e.g. hearts 2 3 4 etc) and b) shuffles the rest of the cards (hopefully :) enabling you to continue organizing the cards again. You can shuffle the cards only twice.

If, once you've used all your shuffles, you get stuck again, you will have no other option than to end the game by clicking the "End game" button. Or you can end the game any time you want with the same button. When the game is ended, you will be given your score, which basically is the number of cards you managed to lock into correct places (e.g. "15 out of 48 cards"). I can tell you that the maximum score is not at all easy to achieve...

That's about it. Pretty simple game once you get the hang of it, but as I said, it can be addictive and you can end up wasting a lot of your free (and working...) time in pursuit of the perfectly organized table of cards and the maximum score. I did. :)