Eredan Arena is a card game for iOS in response to Eredan, considered to be one of the pioneering games of the genre on PC. Eredan Arena is graphically very attractive and you'll constantly want to go back to it, especially since the reward system at the end of each game is very addictive (just like the ranking system). It's unfortunate that you need to be connected to the internet to launch the app, plus the purchasing system is quite confusing.