As far as the typical flash game goes, this game is pretty in depth. Lots of content to play around with. You can create & save your decks. At least up to 14 with 50-60 cards per. This is what I'm seeing currently. This is a fun game & can easily spend several hours just playing, building up your decks, trying to pass challenges, etc. Has a story mode too. I think it's worth playing. If you got a lot of time to kill, I think it will do the trick. The more you play, the more you may discover.