It's a good time waster, but little else. Covering up the time and score is also annoying, and it seems the only replay value is how fast you can optimize your clicking.
The music is not too fitting, but good enough for a game like this. Not a lot of polish (i.e, one track of music that loops, copy pasted art, etc), but that's what is expected from a brainless time waster. The art on the cards did look quite nice.