I've only played 18 minutes of the demo and am 100% sure I want to purchase it. I love mosaic games, but they are typically too easy for me, even on the most challenging settings.
This one has the best of all worlds for everyone with three actually different levels of difficulty. The hardest one doesn't tell you when you've made a mistake: it only checks your answer when you've completed the puzzle. So if something's wrong you have to go figure out where it happened yourself. I love that it doesn't hold your hand in any way. However, it isn't timed, so you can relax and study your moves without feeling stressed out. The music is also very relaxing.
However, for those that like the usual style of game-play that many other popular mosaic games have, they've got that too. There's something to cater to everyone's taste.
LOOOVE it! This game is unique among its kind. I haven't been this excited about a solitaire game since Fairway Solitaire.
Not your same-old-same-old solitaire game at all. This one is innovative--each deck you are given is for *3* games, not one. This makes it more important to make sure you don't waste your moves and save some cards for later. It adds strategy to a game that is typically rather brainless (not that that's bad--it can be soothing to just click high/low/high/low... but it can get old).
Also, there are power-ups and special cards that require strategy to determine when to use them. For instance, there is a bomb card that will appear on the board that you can set off to destroy all surrounding cards. Should you do it?? Depends... do you need those cards? Might be bad to destroy them... you have to think about it. Clever developers.
There is a story too, and the graphics are pleasing. I recommend the game.