These days, the only iOS card game I'm playing with any regularity is SolForge -- I wish there was a little more to it, but the mechanics are very well-constructed. Shadow Era, one of the first collectible card games on the App Store, is still kicking around, however, and has gotten bigger than ever. The game's developers, now called Wulven Game Studios, have sent along word that they've just added a new expansion to the title, and they've released a brand-new app for that expansion, called Shadow Era: Dark Prophecies.
Dark Prophecies adds about 150 new cards to the game, along with a new mechanic called Steadfast, and a new format, called Meltdown. The game also has a brand-new website to show off all of the latest content and news, so you can head there if you want to learn more.
As always, Shadow Era remains free to play, with the opportunity to buy extra "crystals" if you want to pick up more cards sooner. With Blizzard's Hearthstone announcement and the onset of Rage of Bahamut-inspired card battlers, collectible card games are about to get even more popular on the App Store. But Shadow Era was one of the first out there, and it remains one of the best.