This was a good standard solitaire game...
...until I realized you actually expected people to spend REAL money on mochigames to buy stuff like deck styles or special endings, both of which are generally useless to the actual game of solitaire itself.
I expected the upgrades to be obtainable based on points earned after winning, however after a couple runthroughs of the game and exploration of the shop that was obviously not the case. Honestly, a terrible idea. With the hundreds of THOUSANDS of freeware solitaire games floating around, including those already on newgrounds, nobody is going to pay real money for flash solitaire upgrades like deck styles.
Other than that, the game itself was good. Music fit well, graphics were alright, controls were alright. Upgrades and shop, pretty worthless. Seeing as the upgrades were definitely not worth any of my real money, this was just another basic solitaire game, "nothing too new or interesting" and deserving of the 2/5. Substitute mochicoins you have to spend real money on for fake coins earned in game, and think up some more interesting things to buy and this could definitely be a much better game.