Here is another interesting entry to the Board Game Geek solitaire P'nP competition. Game is called LOTR Adventure Deck, and can be downloaded for free here so go do it.
Basically LOTRADG is a push your luck game. You have 25 turns to go through complete deck and reach Mordor in order to destroy the ring. The faster you move, the more risk you take, but if you are too slow you may found yourself arriving to late... In your journey you will encounter friends as well as the enemies, all well known from Tolkien books.
I like to call games like this a peanuts game. For just like with peanuts, you can't have enough of it. Win or lose (and lose you will) your next thought will always be "I think I have time for another one" :)
Each game is played in 5 to 15 minutes, and it is a great pastime if you are waiting for something.
And no matter how good you are, there is no guarantee that you will win every game. All you can do is to measure your record, be it the number of straight wins, most wins in ten games or the least number of turns you used to reach Mordor. Whatever you choose, and no mater how good is the record, you will always try to beat it, so this is not the game that will quickly leave your playing desk.
As it is practice with BGB games, game comes also in printer friendly mode, but as usual, I recommend printing color version in small cards format with 2 pages on 1 sheet of card-stock, in which case you will need just 3 sheets of card-stock for 54 cards and one sheet of regular paper for playing mat to complete the game.
Game is also available as Artscow deck.