Not great
This game is fairly boring. I stopped playing after two minutes, for one real reason: it wasn't engaging my interest. the drawings for the "characters" are good, but there is no animation throughout the game, no real progression, just a series of, let's face it, card battles using only one card. in fact, the attack animations are a lot like those in the old Game Boy Color game for Pokemon cards. However, I do think that allowing the player to see what cards they are leveling up to get is a good touch, and i liked the progression in technology. It's just that the rest of the game itself wasn't very appealing to me, and I've actually seen flash card games done better (Necronomicon).