Heroes Keep has emerged from the long-running Stickmen Wars 2 project which, fun though it was, got a bit too complex! You can read all about that game on this blog.
So what is Heroes Keep? It's a real-time multi-player role playing game (RTMRPG?) with a twist - it's also a card game. Yes, I know, it does sound odd but I think it plays out pretty well!
Here's an early game-play video to give you some idea of the mechanic;