I wanted to like this game, but I just don't find it to have enough depth as it is.
First things first: I'm taking half of a star off of the score because there's no apparent option to mute the very loud music that plays. It may seem petty, but this is something people have been complaining about for years -- especially for puzzle/strategy games which people like to play while listening to something else -- and so it's come time to rate games lower when they don't include this option.
As for the game itself, it immediately appears as if the optimal strategy in single player is to always play the lowest-number cards you can, and then figure out how to play the remaining cards... which, despite being immediately apparent seems to always work. It also immediately appears that the optimal strategy in versus play is to always play the highest card... which also appears to work very well despite being obvious.
beyond that, I don't know what to make of this game. There are other minor problems (for example, the scoreboard for versus mode is ordered such that winning in the fewest moves puts you at the bottom of the scores, even though that seems like what you should try to do), but overall the specific structure just seems lacking. I like the mechanic of playing cards that match suit or color or that are higher in the same suit, but the strategy available is really limited by having to draw cards randomly (especially without it keeping track of the cards that are left in the deck). This would be better, in my opinion, as a solitaire-type game, where all of the cards were laid out and visible but some blocking others such that you had to try to figure out the order in which they needed to be played so that you could play them all. I don't know, that's just one idea, and that's also coming from someone that likes puzzle and strategy games to be more difficult that the average person haha.