It gets kind of annoying having to look up at what pet to catch after each click. It would be better if you collected one pet per round and got as many as you could (as one suggestion).
The cards are a bit busy; since they are so small, they are hard to see. Maybe just have the image of the actual character. Or maybe a simplified version of the character (more cartoonish?).
A little confusing about the special items. The first two games I played, I was trying to get matches of them, but I barely even got three of the same item. Maybe a simple instruction bit on the main screen.
This type of game has a few different moves.
In easy mode (fácil) there's no CPU analyses.
In normal mode CPU analyses 70% of the moves.
In hard mode (difícil) 100 % of the moves are analyzed, but only 6 different situations/moves.
It's my first game with Unity 3D and the first that I put in this site to see if it work.
It's just a test.
 "Green Smiles"){kind=icon}
 "Just A Cell"){kind=icon}
 "Reaction Time Alpha"){kind=icon}
 "Pick The Pets"){kind=icon}
 "RUSH"){kind=icon}
 "Bakugan Memory"){kind=icon}
 "Jogo da Velha"){kind=icon}
 "Mr. Cube's Maze"){kind=icon}
 "3 Slices"){kind=icon}
 "Aether"){kind=icon}
 "VVVVVV Demo"){kind=icon}
 "Bloons Tower Defense 4"){kind=icon}
If you press 'M' it will mute. I should have put that in the directions.