This game is mildly entertaining but there are some problems. First of all, there is nothing unique about the gameplay. I have played these matching card video games a lot of times. The game did address and use the theme, but it do not use it in a way that made the game more creative. Next, you could have made some small polish details to make the game better. To begin with, you could have made the graphics better by using gradients for the graphics instead of just using plain simple colors. You could have made the bottom edge of the cards and the background be darker while the upper ends  are lighter in color. You could also have made graphics for the UI buttons instead of using Unity's default UI button graphics. I also would recommend using the gradient technique for the buttons too. Next, the game would be so much better if there was more sound. The game would have been much better if there was a good soundtrack. Also, you could have added sound effects for clicking buttons. You also could have added variety to all the sound effects. For example, you could have made two sound effects for each action and then write code so that when the player performs the action, the computer randomly selects one of the sound effects to play and the computer could also randomly change the pitch of the sound effect by a little bit. 

Wow, this just proved how bad my memory is -- and that was easy mode. Cute game! Simple, but still a fun classic. Pretty sure I wouldn't survive at harder levels though!   

Pretty tried and true formula. Some colors were so close, damn that purple and slightly lighter purple (mauve?)